NHL Possession Efficiency Ratings

NHL statistics, ratings, possession analysis

PIT@PHI 3-7-18: Microstats

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Pittsburgh at Philadelphia 3-7-18
Individual Possession Analysis
Pittsburgh 5, Philadelphia 2

The below charts are the results of my individual possession tracking.  Documenting what each player does per each individual possession they have at 5v5.  Corsi%’s were retrieved from corsica.hockey.  The below chart shows each player’s turnovers per possession, and which zone they occurred in.  The “turnovers per possession” column represents the percentage of the time a player committed a turnover per their individual possession totals at 5v5.  The average corsi% was 50% and the average turnover% was 26%.

Hornqvist seem to almost have a perfect game in regards to turnovers.  Posting a 9% turnover rate at 5v5, which was the lowest on the team.  Bryan Rust was injured early in the 1st period, so his individual possession sample size of 4 really isn’t going to tell us much about his 66.7% corsi% to that point.  This chart seems to be more straightforward in presenting a much clearer picture in that, as corsi% gets lower, the turnover rates increase for each player.

The Kessel-Brassard-Simon line posted a 38.3% corsi% on average, well below the team average of 50%.  This line’s average turnover rate was 44%, as the team average was only 26%.  A lot of this stems from the line’s inability to put passes together in the offensive zone.  The other 3 lines were able to complete a pass in the offensive zone on ~25% of their individual possessions, where the Kessel-Brassard-Simon line was at 17%.

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The defensive zone turnovers per possession average was 4%, Brassard and Maatta posted the highest rates, at 9% each.  The issue here is that the bottom 2 lines are just dumping the puck in at a high rate.  On average, a dump in that resulted in a turnover occurred on 6.5% of individual possessions at 5v5.  You can see that Kuhnhackl (18%), Sheahan (19%), Ruhwedel (20%), Simon (13%), and Brassard (9%) all posted well below average corsi%’s, which stem from a lack of offensive zone possession and suboptimal attempts to enter the zone.

The chart below shows each players’ shot attempt efficiency per individual possession at 5v5.  (SOG+Missed+Att Blocked)/Possessions = Efficiency%.  Average Shot Attempts per possession were 10.3%, meaning for every ~10 individual possessions a player attempted 1 shot.  The shot attempt assist per possession average was 7.8%, meaning per every ~13 individual possessions, a player would complete 1 pass to a teammate who then attempted a shot.

The team average offensive rebound% was 10.6%, and the average defensive rebound% was 11%.  Hornqvist was very efficient at getting shot attempts at 5v5, posting a 26% shot attempts per possession rate, averaging a shot attempt on 1 in 4 individual possessions.  Jake Guentzel was about the team average in both shot attempts per possession and shot attempt assist per possession, as well as team average in rebound rates.  Conor Sheary posted the highest offensive rebound rate of 30%.  Both of Sheary’s goals at 5v5 were the result of a rebound he obtained.

The average offensive rebound% for forwards was 14.7%, and average defensive rebound% was 11.8%.  For defensemen, the average offensive rebound% was 4.4% and the average defensive rebound% was 9.7%.

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The chart below shows passes completed by zone per individual possession.  For example, Malkin had 41% of his 34 individual possessions result in a completed pass in the offensive zone(14/34 = 41%).  This chart offers a good estimate as to which zone each player was spending time in during 5v5 play.

The average offensive zone passing accuracy% was 74% as a team, but Kessel was at 67% (4 completed/6 attempted), and Brassard was at 50% (3 completed/6 attempted).  Simon was at 100%, but only on 1 pass attempt.

Jake Guentzel’s passing accuracy by zone: Offensive 89%, Neutral 75%, and Defensive 100%.  Team averages: Offensive 74.3%, Neutral 72.6%, Defensive 86.7%.

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The below chart shows a steals analysis and the zone in which the steal occurred.  Hornqvist was able to get 2 steals in the offensive zone, as well as Hagelin.  Dumoulin did quite well in the neutral zone, leading the team with 5 neutral zone steals.  The Kessel-Brassard-Simon line did not get one steal in the offensive zone.  Each other the other 3 lines averaged 2.67 steals in the offensive zone.  Steals can help to offset offensive zone turnovers, in order to maintain zone pressure.

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Written by RReed

March 9, 2018 at 8:15 AM

Posted in Uncategorized

PIT@BOS 3-1-18: Microstats

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Pittsburgh at Boston 3-1-18
Individual Possession Analysis
Boston 8, Pittsburgh 4

The below charts are the results of my individual possession tracking.  Documenting what each player does per each individual possession they have at 5v5.  Corsi%’s were retrieved from corsica.hockey.  The below chart shows each player’s turnovers per possession, and which zone they occurred in.  The “turnovers per possession” column represents the percentage of the time a player committed a turnover per their individual possession totals at 5v5.  The average corsi% was 33.3% and the average turnover% was 32%.

Conor Sheary’s 78% turnover% stands out quite a bit as well as Kuhnhackl’s 63% turnover%.  The difference being that 51% of Kuhnhackl’s 63% turnover% resulted from clearances(38%) and dump ins that resulted in a turnover(13%).  Turnovers yes, but in less dangerous areas than that of the neutral zone or defensive zone.

The Sheary-Brassard-Kessel line struggled with turnovers, averaging a 57% turnover rate at 5v5.  The other 3 lines averaged a 32% turnover rate.  So per every 10 individual possessions, the Sheary-Brassard-Kessel line committed a turnover on 5.7 of those possessions.  The rest of the Penguin’s lines averaged 3.2 turnovers per every 10 individual possessions.

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Defensive zone turnovers were an issue at 5v5 for Pittsburgh this game.  Those that were below the team average corsi% of 33.3%, had a defensive zone turnover rate of 9.4%.  Those above the team average corsi% had a defensive zone turnover rate of 5.7%.

Now in looking the data (outside of corsi%), it’s difficult to say why Matt Hunwick had such a poor corsi% (15.4%).  Turnover rates were low, offensive and defensive rebound%’s were high (50% and 14% respectively).  Hunwick played most of his 5v5 minutes paired with Letang and Schultz.  Letang and Schultz had poor games relative to their standards. Schultz had a 20% defensive zone turnover rate, and Letang’s was 11%.  Hunwick had no individual shot attempts and did not assist anyone on a shot attempt.

The chart below shows each players’ shot attempt efficiency per individual possession at 5v5.  (SOG+Missed+Att Blocked)/Possessions = Efficiency%.  Average Shot Attempts per possession were 7.9%, meaning for every ~12.5 individual possessions a player attempted 1 shot.  The shot attempt assist per possession average was 4.9%, meaning per every ~20 individual possessions, a player would complete 1 pass to a teammate who then attempted a shot.

Individually, those with a corsi% of less than the team average of 33.3%, averaged a 17.4% offensive rebound% and a 5% defensive rebound%.  Individually, those above the team average corsi% averaged a 11.5% offensive rebound% and 5.1% defensive rebound%.  Obviously Kessel posting a 100% offensive rebound% has some sample size issues in that he was only on the ice for 1 available offensive rebound.

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The chart below shows passes completed by zone per individual possession.  For example, Bryan Rust had 25 5v5 possessions, where 9 of them resulted in him completing a pass in the offensive zone(36%).  Guentzel had 18 individual possessions at 5v5, and 7 of them resulted in a completed pass in the offensive zone.  On average, 12.8% of individual possessions resulted in a completed pass in the offensive zone.  13.4% resulted in a pass completed in the neutral zone.  20.7% resulted in a pass completed in the defensive zone.

In the prior two games I have tracked for Pittsburgh this month the breakdown for passes completed by zone per individual possession is as follows:

vs Los Angeles(56.6% corsi%):  Offensive 23.4%. Neutral 12.6%, Defensive 21.7%

vs Toronto (56.4% corsi%):  Offensive 20.6%, Neutral 14.9%, Defensive 17.1%

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The chart below looks at each players defensive steals at 5v5, and the zone in which they occurred in.  The Sheary-Brassard-Kessel line did not get any offensive zone steals or neutral zone steals between them.  The other 3 lines each averaged ~2.67 offensive zone steals and 1 neutral zone steal during 5v5 play.

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Written by RReed

March 3, 2018 at 2:44 PM

Posted in Uncategorized

TOR@TB 2-26-18: Microstats

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Toronto at Tampa Bay 2-26-18
Individual Possession Analysis
Tampa Bay 4, Toronto 3 (F/SO)

The below charts are the results of my individual possession tracking.  Documenting what each player does per each individual possession they have at 5v5.  Corsi%’s were retrieved from corsica.hockey.  The below chart shows each player’s turnovers per possession, and which zone they occurred in.  The “turnovers per possession” column represents the percentage of the time a player committed a turnover per their individual possession totals at 5v5.  The average corsi% was 38.4% and the average turnover% was 29%.

van Riemsdyk posted the highest corsi% of 52.4%, despite posting a turnover rate of 38%.  Looking at JVR’s turnovers, 33%/38% resulted from offensive zone turnovers(8%) + clearances(4%) + dump in turnovers(21%).  Turnovers in areas that do not hurt the team as much as neutral zone and defensive zone turnovers.  Looking at combined (neutral zone + defensive zone turnover rates), players who were above the team average corsi% of 38.4% averaged an 8% neutral zone+defensive zone turnover rate.  Players who were below the team average corsi% averaged a 10% neutral zone+defensive zone turnover rate.

The Leafs struggled to establish themselves in the offensive zone, as their dump in recovery rate was 8%.  In the previous two games vs Boston and NY Islanders, their average dump in recovery rate was 17%.

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The chart below shows each players’ shot attempt efficiency per individual possession at 5v5.  (SOG+Missed+Att Blocked)/Possessions = Efficiency%.  Average Shot Attempts per possession were 9.5%, meaning for every ~10 individual possessions a player attempted 1 shot.  The shot attempt assist per possession average was 6.5%, meaning per every ~15 individual possessions, a player would complete 1 pass to a teammate who then attempted a shot.

James van Riemsdyk was able to attempt a shot on 4 of his 24 individual possessions(17%), while also posting a 43% offensive rebound%.  Individually, those with a corsi% of less than the team average of 38.4%, averaged a 11% offensive rebound% and a 6% defensive rebound%.  Individually, those above the team average corsi% averaged a 15% offensive rebound% and 14% defensive rebound%

Nikita Zaitsev’s combined shot attempts+Shot attempt assists per possession rates were the 2nd lowest on the team vs Tampa Bay.  Zaitsev struggled to create anything offensively, and was on the ice for the most defensive rebounds available(18) where he managed a 0% defensive rebound rate.  The Komarov-Plekanec–Leivo line combined for a 13% defensive rebound%, where the other three lines averaged a 30% defensive rebound%.

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The chart below breaks down what percentage of each players individual possessions at 5v5 resulted in a completed in the particular zone.  Zaitsev had the lowest combined (Offensive zone passes completed + Neutral zone passes completed) on the team at 20%.  So on 8 of 42 individual possessions at 5v5, Zaitsev completed a pass to the offensive zone or neutral zone.  For comparison, here are the other defensemen’s numbers:

Rielly 33%, Dermott 29%, Gardiner 29%, Polak 28%, Hainsey 24%

William Nylander struggled to get anything going vs Tampa Bay, completing only 6 passes in the offensive zone on 22 individual possessions(27%) at 5v5.  The previous two games vs Boston and NY Islanders, Nylander posted 39% and 41% respectively, completing a pass in the offensive zone 4 out of every 10 individual possessions.

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The chart below shows each players steals during 5v5 play, and the zone in which they occurred in.  Toronto averaged .83 steals per individual player vs Tampa Bay.  In the two previous games vs Boston and NY Islanders, Toronto averaged 1.44 steals and .89 steals respectively.

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Written by RReed

February 28, 2018 at 12:42 AM

Posted in Uncategorized

BOS@TOR 2-24-18: Microstats

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Boston at Toronto 2-24-18
Individual Possession Analysis
Toronto 4, Boston 3

The below charts are the results of my individual possession tracking.  Documenting what each player does per each individual possession they have at 5v5.  Corsi%’s were retrieved from corsica.hockey.  The below chart shows each player’s turnovers per possession, and which zone they occurred in.

The “turnovers per possession” column represents the percentage of the time a player committed a turnover per their individual possession totals at 5v5.  Kapanen-Moore-Leivo line totaled about 8.5 minutes of 5v5 ice time, thus explaining the low individual possession counts of 16, 11, and 14 respectively.  This smaller sample helps further explain the more extreme corsi%’s of 84.6%, 83.3%, and 72.7%.  This line as a whole was not very efficient, but once established in the offensive zone, were able to grab offensive rebounds on 52% of their shot attempts.  For some perspective, the other 3 lines as a whole had an average offensive rebound% of 33%.  (See: Rebound Chart)

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Josh Leivo’s turnover rate of 71% stands out quite a bit relative to teammates, but 43% of them resulted from clearances(14%) + dump ins that resulted in turnovers(29%).  So Leivo committed turnovers in areas that are not putting the team in a dangerous spot as opposed to defensive zone turnovers and neutral zone turnovers.

Every Leaf posted a 5v5 corsi% above 50% for the game.  Of players seeing more ice time, Bozak, Kadri, Marleau, and Brown all posted corsi%’s below the team average of 62%.  All 4 posted turnover rates above the team average turnover rate of 28%.  Bozak had 27 individual possessions at 5v5, and 11 of those possessions resulted in a turnover.

The chart below shows each players’ shot attempt efficiency per individual possession at 5v5.  (SOG+Missed+Att Blocked)/Possessions = Efficiency%.  Average Shot Attempts per possession were 10.8%, meaning for every ~9 individual possessions a player attempted 1 shot.  The shot attempt assist per possession average was 6%, meaning per every ~16 individual possessions, a player would complete 1 pass to a teammate who then attempted a shot.

Kapanen-Moore-Leivo all above the team average of 10.8% in terms of shot attempts per individual possession.  Moore posted the highest offensive rebound% of 38%, obtaining 3 of the 8 offensive rebounds available during 5v5 play.  Individually, the average offensive rebound% was 9.6%, where in the previous game vs the NY Islanders is was 5.8%.  On average the 4 lines averaged an offensive rebound% of ~39% vs Boston, and averaged ~24% vs NY Islanders.

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Mitch Marner led the way with 5 offensive zone steals, which help maintain pressure in Boston’s zone.  Jake Gardiner had a team high 3 steals in the neutral zone.

Dermott led the way with 14 defensive zone steals, doing well to stay in front of Boston players who are attempting to track down dump ins.

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The chart below breaks down what percentage of each players individual possessions at 5v5 resulted in a completed in the particular zone.  For example, William Nylander had 28 individual possessions, and 11 of them resulted in a completed pass in the offensive zone.  Jake Gardiner had 25% of his 5v5 possessions result in a completed pass in the neutral zone, the highest on the team.

Toronto’s defensemen often use their defense partner as an option for passes that initiate build up and zone exits.  If something is not open in the neutral zone, they will look to their defense partner to alleviate pressure and wait for new passing lanes to open up.  I plan to look into this more in future write-ups.

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Written by RReed

February 25, 2018 at 11:06 PM

Posted in Uncategorized

NYI@TOR 2-22-18: Microstats

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New York Islanders at Toronto 2-22-18
Individual Possession Analysis
Toronto 4, New York Islanders 3 (Final/SO)

The below charts are the results of my individual possession tracking.  Documenting what each player does per each individual possession they have at 5v5.  Corsi%’s were retrieved from corsica.hockey.  The below chart shows each player’s turnovers per possession, and which zone they occurred in.

The “turnovers per possession” column represents the percentage of the time a player committed a turnover per their individual possession totals at 5v5.  When reading this chart, you see that overall James van Riemsdyk had a 55% turnover rate, meaning of his 20 individual possessions at 5v5, 11 of them resulted in a turnover.  30% (6 of 20) possessions resulted in offensive zone turnovers, 5% (1 of 20) resulted in a clearance, and 20% (4 of 20) resulted in a dump in that resulted in a turnover.

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The chart below shows each players’ shot attempt efficiency per individual possession at 5v5.  (SOG+Missed+Att Blocked)/Possessions = Efficiency%.  Average Shot Attempts per possession were 9.6%, meaning for every ~10 individual possessions a player attempted 1 shot.

The shot attempt assist per possession average was 6.1%, meaning per every ~16 individual possessions, a player would complete 1 pass to a teammate who then attempted a shot.  Morgan Rielly was very effective inside the offensive zone, attempting a shot attempt ~1 in every 5 individual possessions (19%), and assisting a teammate on a shot attempt ~1 in every 10 individual possessions.  The average defensive rebound% for defensemen was 11%, Rielly was twice that at 22%.

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The above chart shows offensive and defensive rebound percentages at 5v5.  Toronto’s average offensive rebound% was 5.8%, and their defensive rebound% was 8.3%.  What stands out is that the Marner-Kadri-Marleau line struggled to obtain any offensive rebounds following a shot attempt.  The Nylander-Matthews-Hyman line was able to rebound ~40% of their shot attempts.

The chart below is a breakdown of steals by each player, and the zone in which they occurred in.  JVR was able to offset some of his turnover issues with offensive zone steals.  These steals are a combination of takeaways, intercepting opponent’s passes, and tracking down opponent’s dump ins while under pressure.

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This chart below is a breakdown of passes completed by each player at 5v5 and the zone in which they were completed in per individual possession.  For example, William Nylander had 22 individual possessions at 5v5, and 41% (9/22) resulted in a pass completed in the offensive zone.  It is no surprise that the Nylander-Matthews-Hyman line spent some time in the offensive zone as evident below.

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Written by RReed

February 24, 2018 at 9:07 AM

Posted in Uncategorized

TOR@PIT 2-17-18: Microstats

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Toronto at Pittsburgh 2-17-18
Individual Possession Analysis
Pittsburgh 5, Toronto 3

The below charts are the results of my individual possession tracking.  Documenting what each player does per each individual possession they have at 5v5.  Corsi%’s were retrieved from corsica.hockey.  The below chart shows each player’s turnovers per possession, and which zone they occurred in.

The “turnovers per possession” column represents the percentage of the time a player committed a turnover per their individual possession totals at 5v5.  Now what immediately stands out is that Sheary, Guentzel, Crosby, Kessel, and Aston-Reese all had high turnover rates above the team average for the game of 28%.  On average, about half of these turnovers occurred in the offensive zone, and about 25% of total turnovers resulted from a clearance out of the zone or a dump in.  These five players altogether combined for 1 defensive zone turnover, so they were not putting their team in a harmful spot.

Ian Cole posting the highest corsi% at 76.5%, while also posting the 2nd lowest turnover rate per individual possession at 13%.  Cole’s passing accuracy% for the game was 83%, which is above the team average of 77%.

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The chart below shows each players’ shot attempt efficiency per individual possession at 5v5.  (SOG+Missed+Att Blocked)/Possessions = Efficiency%.  Average Shot Attempts per possession were 12%, meaning for every 8 individual possessions a player attempted 1 shot.  The shot attempt assist per possession average was 8%, meaning per every 12 individual possessions, a player would pass to a teammate who then attempted a shot.

Kessel is a very efficient shooter, basically attempting a shot ~1 out of every 4 individual possessions.  Malkin and Crosby led the way in shot attempt assists at 26% and 21% respectfully.   So basically, for every 4 individual possessions on average, Malkin and Crosby passed the puck to a teammate who attempted a shot.

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Above, you can also see offensive and defensive rebound percentages at 5v5.  A rebound is classified as when the puck is retreived by a player following any shot attempt (SOG, missed, attempt blocked) that remains in play.  So pucks that are deflected out of play or frozen by the goalie are deducted from the available rebound totals for each player.

Team average offensive rebound% was 8%, and defensive rebound% 6%.  Carter Rowney leads the way, posting a 25% rebound%. Obviously playing limited minutes and only totaling 7 individual possessions at 5v5, Rowney obtained 1 offensive rebound of the 4 available.  Ian Cole posted the highest defensive rebound% of 33%.  Maatta and Hunwick both struggled to rebound defensively, and their corsi%’s of 47.6% and 42.1% highlight those issues.

Team average passing accuracy by zone:  Offensive: 70%, Neutral 74%, Defensive 91%  Blank cells indicate that the player did not attempt any passes to that zone.

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Below is a breakdown of each players’ steals, and the zone in which they occurred.  Crosby and Reese apply a tremendous amount of pressure in the offensive zone, constantly pressuring Toronto following a rebound they did not obtain, or a turnover committed in the offensive zone.  Hunwick, Maatta, and Letang did well to cover the points along the boards, in order to prevent easy clearance attempts by Toronto.

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Written by RReed

February 20, 2018 at 4:11 AM

Posted in Uncategorized

LA@PIT 2-15-18: Microstats

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Los Angeles at Pittsburgh 2-15-18
Individual Possession Analysis
Pittsburgh 3, Los Angeles 1

The below charts are the results of my individual possession tracking.  Documenting what each player does per each individual possession they have at 5v5.  Corsi%’s were retrieved from corsica.hockey.  The below chart shows each player’s turnovers per possession, and which zone they occurred in.

The “turnovers per possession” columns represents the percentage of the time a player committed a turnover per their individual possession totals at 5v5.  For example, Phil Kessel had 29 individual possessions at 5v5 and committed 13 turnovers, so 13/29 = 45% turnover rate.  Team team average 5v5 turnover rate for Pittsburgh was 23.6%.  Kessel posted a team high turnover rate of 45%, as well as a team highs in offensive zone turnover rate (28%), and Neutral zone turnover rate (10%).  Kessel’s biggest issue was passing accuracy, he completed just 58% of the passes he attempted, where the team average was 78%.

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All shot attempts (SOG, missed, attempt blocked) are evaluated from an efficiency standpoint.  Rowney putting up very high a very shot attempt per possession percentage of 40%, compared to the team average of 11%.  Essentially saying that players attempted one shot attempt per every 9 individual possessions.  Shot attempt assist per possession are the percentage of a players individual possessions in which they passed the puck to someone who them attempted a shot.

Dominik Simon recored a shot attempt assist on 5 of his 16 individual possessions.  No surprise as Crosby putting up above average numbers in both categories, where the team average was 11% for shot attempts per possession, and 7% for shot attempt assist per possession.

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The chart below shows individual steal totals at 5v5.  Sheary, Hagelin, and Cole led the way with 4 offensive zone steals each.  These are particularly helpful  as once possession is lost in the offensive zone, pressure can then be applied to obtain possession again.  Surprising to see a defensemen (Ian Cole) as one of the leaders in offensive zone steals.  Cole did well to pinch in on the blue-line and prevent clearances by Los Angeles.

You can also see offensive and defensive rebound percentages at 5v5.  A rebound is classified as when the puck is retreived by a player following any shot attempt (SOG, missed, attempt blocked) that remains in play.  So pucks that are deflected out of play or frozen by the goalie are deducted from the available rebound totals for each player.

Team average offensive rebound% was 12.3%, and defensive rebound% 12.1%.  Zach Aston-Reese putting up an offensive rebound% of 31% and a defensive rebound% of 22%, led the way for Pittsburgh.

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Written by RReed

February 18, 2018 at 4:41 PM

Posted in Uncategorized