Letestu to the Rescue II

The Oilers powerplay has been trending upwards the past few weeks, and currently ranks 6th in the league with a 22.4% efficiency. Another way to look at the powerplay is by the number of goals the team has scored per 60 minutes, which currently has them second in the league, only behind the Columbus Blue Jackets, with 8.06. The league average for goals scored per 60 is 5.74, which the Oilers have been above for the most part thanks largely to a shooting percentage over 14% (4th best in the league). What’s also been encouraging is the fact that the number of unblocked shots (i.e., Fenwick) the club generates per 60 has steadily increased on the powerplay, a good predictor for future success, and is now ranked 11th in the league with 68.12. At one point the Oilers were ranked quite low league-wide, well below the league average of 66.5.

Related: Letestu to the Rescue (2016, November 18)

It’s really been the last 10 games for the Oilers, and the addition of Mark Letestu to the powerplay unit, that has driven the team’s success with the man advantage. Over the first 17 games, Letestu had played a total of 19 minutes on the powerplay, which ranked him near the bottom in terms of ice time among forwards. This was surprising considering that Letestu has historically had a positive impact on the team on the powerplay, as the Oilers typically generated more unblocked shot atttempts with him on the ice. This impact also showed up in his teammates performance, as players often had better on-ice shot generation rates with Letestu than without him. Please note that the graph below contains the shot metrics as of November 18, 2016.

letestu_pp_ff60

Full article is at The Copper & Blue.

Talking Oilers and Shot-share on the CBC Edmonton News (TV)

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Joined Adrienne Pan on the CBC News in Edmonton to talk Oilers, playoff aspirations, how the team is doing in terms of shot-share and more. Clip starts around the 18:20 mark.

http://www.cbc.ca/player/play/832418883527

CBC also put together a few graphics on the Oilers shot-share (i.e., Corsi). Please note that the data was from this past weekend, so the numbers will be off slightly. Data was from Corsica Hockey.

Talking Oilers on the Lowdown with Lowetide (TSN 1260) + A note on being negative

Joined Lowetide on Monday morning to talk Oilers and my recent piece over at The Copper & Blue. Clip starts around the 25 minute mark.

Just a quick note. I know my work can be perceived as being too negative, as the Oilers are a competitive team this year and yet my work, and the work of others, tends to highlight the flaws. The issue for me personally is that while winning today is awesome, I like looking at ways that the winning can remain sustainable. The end goal is to win the Stanley Cup, and to do that the team needs to establish an extended window, at least a five year term, where they can be legitimate, championship contenders. And while the pieces for success are coming together, there remains plenty of things that I think the team needs to do better to be a real contender going forward. This includes player acquitions, player deployment, cap management, roster construction, line combinations, special teams, as well as the actual outputs including goals and shots.

I try my best to include as much information as possible into my analysis, and do place a critical lens on all facets of this team. My main objective is to raise questions that I think are important to evaluate this team and uncover aspects of the game that I think the Oilers should focus on for long-term success.

If that makes me a lousy, negative fan, so be it. I’ll create my own fan experience, and everyone else can create their own.

Bad News Sunday: Time for a reality check

After reading Minnia’s article on Friday, I felt pretty good about the team. She made some great points about the team’s progress, the impact different players have had, and how great McDavid has been. Ya know things aren’t so bad, I thought. The Oilers are first in the Pacific division. They’re getting 51.9% of the total shot attempts at even-strength. They’re getting 51% of the total goals scored. The powerplay is in the top 5. The penalty kill is in the top 10.

Then I watched the game on Friday night. And the sunshine-and-lollipops feelings went away. Okay, who am I kidding. My cold, bitter heart that’s endured so much losing because of this team didn’t let those feelings sink in for too long. We need to face it: this team has problems.

  1. Points are slipping away

After 30 games, the Oilers hold a record of 14-11-5. They sit first as of this writing, but could very well be out of the top three in their division by the end of the night. Their points percentage, the points divided by the total available points, is 0.550. To put this into perspective, a 0.550 points percentage was good enough for eighth place in the Western conference last season. Not only are the Oilers very mediocre up to this point, but so is their division, and pretty much the entire West. And the Oilers still haven’t been able to capitalize. They couldn’t beat the Coyotes this year. They couldn’t beat the Sabres. And they’ve consistently left points on the table against teams they should be competing against, like Minnesota, for a playoff spot.

Full article is at The Copper & Blue.

Weekend Q&A: McDavid’s Wingers, McLellan’s Short Leash, and the Rogers Place Crowd

coppernblue.com.full.54273Below is part of the Weekend Q&A my colleague Minnia and I put together over at The Copper & Blue.

Minnia: With McDavid being paired with so many different wingers, especially on the right side, who have you liked best so far?

Sunil: This guy is so incredible that it doesn’t even matter who his linemates are. Usually we look for which two or three players have chemistry and how they can work off of each other. With McDavid, you look at who needs to play with him to get going or which player’s potential you can maximize. At the start of the year, I would have pushed for Maroon to be McDavid’s left side instead of Lucic, just based on Maroon’s 16 games with Edmonton last season. And I would’ve wanted Eberle on the right side, as he had great chemistry with McDavid and has the speed and finish to produce on the top line with him. Today, I’d rather have Maroon playing on other lines, as he’s been a positive influence on others and has been able to generate goals with McDavid on the bench, something that remains an issue for the Oilers. As of today, I’d keep Lucic with McDavid as they’ve been productive together, and I’d add pretty much any of the depth right wingers to that line. It wouldn’t hurt to have Puljujaarvi there, since the Oilers have no idea what to do with him, or even Slepyshev who has the skillset to fill a complementary role. Whatever the Oilers do, they have to ensure that the other three lines behind McDavid are loaded up so they can start producing goals. This means they may have to have the more depth players on the first line with McDavid.

Minnia: It seems McLellan is quick to “punish” this season, whether it’s reducing ice time drastically for mistakes in-game (Klefbom, Larsson) or sitting players for extended periods of time (Pouliot)– do you like his approach in leaving very little room for mistakes, or would you appreciate some more leeway for players?

Sunil: I think it’s ridiculous how McLellan has been handling/punishing his roster to be honest. A coach is responsible for putting together optimal line combinations and defence pairings, and then properly deploying them to increase their odds of winning games. If a player is struggling within a game, it makes sense to give ice time to the players you’re trusting. But after the game, re-set, work with the player, and base your future decisions not just on one bad play, but a larger sample size. Klefbom is a prime example here. He’s done very well paired with Larsson this year, all areas of the ice, against the other team’s top lines. The duo have a 51.79% share of all of the shot attempts when they’re on the ice this season, which is great considering the competition they face (Source: Corisca Hockey). Their 345 minutes together is the most on the team, so why not stick with that? After a bad play last week, Klefbom still isn’t back with Larsson, who is now getting caved in when it comes to shots against paired with Russell.

Minnia: Taking a look at Bakersfield, who are some of the players on the cusp you’d like to see up on the Oilers in case of injury (#knockonwood)?

Sunil: I would love to see Jujhar Khaira with the Oilers at some point this season. He’s a good skater and showed last season in limited minutes that he can keep up with the more established players. In 2015/16, with Pouliot out, Khaira skated with RNH and Eberle for a total of 53 minutes at 5v5, and played the same level of competition that RNH is accustomed to. The trio had a 50% share of the shot attempts, which was great considering the rest of the team was below 48% for most of the season. Long term, he should be a depth centerman, but it wouldn’t hurt to continue breaking him in on the wing. This season in Bakersfield, he has 5 goals and 5 assists in 12 games and ranks second on the roster when it comes to points per game (0.83). He’s also one of the team leaders in shots per game (3.1).

Minnia: What do you make of the interesting trend that the Oilers seem to lose a lot of games when they win the Corsi battle, yet win a lot of games when they lose the Corsi battle?

Sunil: A lot of that has to do with score effects. Basically, when a team is trailing in a game, which the Oilers have done often recently, they increase their output of shots as they start taking more risks and might shorten their bench and get their top players out there to find offence. On the flip side, when a team is leading, they often slow down their offence, start playing a safer game, off-the-glass-and-out tactics in an attempts to stifle the shots against. At the end of the game where the Oilers lose, it might look like they were outshooting the other team, but that usually happened after they were trailing.

Full article is at The Copper & Blue.

Correlation between shot-share and goal-share

Here’s a graph showing every team’s regular season performance at even-strength (5v5) from the 2007/08 season to the 2015/16 season (Source: Corsica Hockey). Getting a higher proportion of the total goals scored for and against is the key to winning games, so that’s displayed in the vertical axis. On the horizontal axis is the team’s share of all shot attempts (i.e., Corsi). Each dot represents every single team by season since 2007/08, with the lockout-shortened 2012/13 season excluded since each team only played 40 games. Comparing a 40-game season to an 82-game season might give us unreliable results (team’s can get hot or cold over a shortened length) so I left that season out and compared apples to apples.

goal-and-shot-share-2007-2016

The black bars that cut through the graph horizontally and vertically mark the average across all the teams over the eight seasons. Not surprisingly, it’s right at 50.01% for both goal-share and shot-share. I’ve also added a trend line, which has a r-squared value of 0.32. It’s obviously not a perfect correlation between shot-share and goal-share, but you increase your chances of scoring if you’re outshooting your opponents. Teams that posted a higher than average shot-share but didn’t see their goal-share get higher than 50% (bottom right quadrant) often had external factors at play. It could’ve been injuries to key players or a lower than normal shooting or save percentage. On the flip side, team’s might have a lower than average shot share, but still outscore oppoenents (top left quadrant). This would be due to a higher than normal shooting percentage (shooters get hot) or team save percentage (goalie gets hot). Hockey is weird like that.

Highlighted in the graph are eight orange dots with a black ring around it. These are the Oilers eight seasons, and not surprisingly they’re all in the bottom left quadrant where you don’t want to be. They’ve been terrible at outshooting opponents, and as expected, they haven’t been able to get a higher share of the total goals except for that one time in 2008/09. They had one of the worst shot-shares in the league that season (46.35%), but thanks in large part to a slightly higher than normal shooting percentage, and some great goaltending from Roloson (a 92.45 save percentage), the Oilers managed to get 50.9% of the total goals.

This season the Oilers would be in the top right quadrant, as they’re getting 52.00% of the total shot attempts, which has them 9th in the league, and are also getting 52.88% of the total goals (i.e., goal-share). Generating shots is a repeatable skill and is dependent on the coaching staff’s on-ice tactics and the skill of the players. A team’s ability to generate shots very often remains consistent through a season, and season-to-season, as long as the coaching staff remains and players stay healthy. The Oilers have a good thing going with their ability to out-shoot opponents, but this in no way guaranetees goals. A lot has to happen for a shot to become a goal, and goalies can always go on hot and cold stretches. But as long as they keep their share of shot attempts up, they’re putting themselves in a position to succeed.

Thoughts on the Oilers: Current state, Eyeballs first and Defence core

cutAfter 28 games, the Oilers are sitting 3rd in a weak Western conference, 1st in the Pacific, with a record of 14-10-4.  They’ve outscored their opponents 55-49 at even-strength, a 52.88% goal-share that ranks them 8th the league. Their 55 goals ranks them 4th in the league, while their 49 goals against is the 7th highest. The Oilers currently have a 52.34% score and venue adjusted Corsi, which ranks them 9th in the league behind Boston, LA, Carolina, Washington, Florida, San Jose, St. Louis and Nashville (Natural Stat Trick). A team’s share of shots tends to remain consistent through a season as it’s influenced by the coaching staff’s tactics and player deployment, as well as what the player’s actually do on the ice. Really the only way the Oilers might see a drop in their shot-share is if the coaches change or if the team loses significant players.

There’s no indication that the Oilers are relying on luck-driven factors including shooting percentage and save percentage. The Oilers have a 7.74% shooting percentage and a 92.63% save percentage, which ranks them right around league average.  Quite often, team’s go on hot streaks either converting more of their shots into goals or preventing more shots from becoming goals. If either of these factors is significantly higher or lower than the league average, it’s worth monitoring as team’s tend to regress to the mean over time. I do think this team can compete for a playoff spot as long as McDavid and Talbot stay healthy. They can generate scoring chances at 5v5, ranking 4th in the league when it comes to high danger shot attempts (11.65 per hour), but they also allow a lot of chances against, allowing the 3rd highest (11.34 per hour).

Please note that I look at 5v5 play to assess a team and individual player performance as it’s when both teams are trying to score and trying to defend. Special teams play is important, but they involve specific players doing a specific task, which would skew the overall numbers for the team and players if included.

Couple thoughts:

The comment from Todd McLellan a few weeks ago that a lot of anti-stats people loved, but that I found very amusing, was the whole “eyeballs first….” thing. This implied that people who do statistical analysis or analytics aren’t watching the games enough and that their work is not well informed. Here’s the thing: watching the game and doing the analysis should always be dependent on one another. What you see/hear/read informs your analysis, but your analysis informs your viewing of the game or topic as well. That’s how it works in any industry that relies on stats and analytics, with hockey, a game, a goal-scoring contest, being no different. If you’re really only doing stats after, you’re at risk of overlooking key information or letting confirmation bias set it. It’s a recipe for failure. Can you imagine a real-world CEO having an “eyeballs first” perspective on his or her business? They’d be ridiculed.

With the upcoming expansion draft and the fact that a number of key players including McDavid, Draisaitl and Nurse will be needing contracts, it’s a bad time to start over-valuing depth defenceman like Kris Russell. I really don’t mind Russell as a depth player, but he’s been way over played by this coaching staff, and the underlying goal and shot metrics don’t paint a pretty picture (OilersNation). The team would be better off if  he was playing at his established NHL level, but the coaching staff has other plans (which includes reducing Klefbom’s minutes, awesome). The Oilers have to protect three defencemen this upcomg off-season, and it should be Sekera, Larsson and Klefbom. Signing Russell in January means someone is moving out, either one of Sekera, Larsson or Klefbom, and the future contract for one of the young players is being impacted. I don’t think it’s worth getting into it with Russell, and that they could move Russell at the deadline, especially if players get healthy and he’s been bumped down the depth chart by then. My ideal pairings: Klefbom-Larsson, Sekera-Benning/Fayne (7th defenceman) and a combo of Nurse/Davidson/Gryba (8th) for the third pairing.

Just want to throw this out there, but if anyone has any questions about analytics, feel free to email me (sunilagni23 at gmail dot com). There’s a lot of bad information floating around, so if I can be of any help, let me know and I’ll try my best to answer it. I’ve been following the discussion around stats and analytics for a long time now (learned a lot from Vic Ferrari, JLikens, Dellow, Zona, Reynolds, Battle of Alberta, Parkatti, plenty more), so I’ve seen the same cycle of topics come over and over again.

The Edmonton Oilers With and Without McDavid

The Oilers were very fortunate to have won the draft lottery that landed them an elite player like Connor McDavid. In 23 games this season, the 19 year old has scored 29 points, with 20 of those points coming at even-strength. His 3.29 points per hour at 5v5 has him third in the league, behind Kucherov and Stamkos. He consistently drives offence in all three zones, as teammates do better with him than without him when it comes to individual and on-ice metrics.

Without a doubt, McDavid has been the key driver behind the Oilers success so far this season. The club is 12-9-2, securing 26 points, and sits in first place in the Pacific division. And their +9 goal differential (all situations) ranks them second in the western conference. Say what you will about the teams in the west and their struggles, but the Oilers have managed to take advantage and remain competitive.

A quick glance at the underlying numbers, and the Oilers appear to be an average-to-good NHL club. Below is their overall share of shot attempts, scoring chances, expected goals and goals at 5v5 this season. Included for each metric is their ranking in the league.

CORSI FOR% FENWICK FOR% SCORING CHANCES FOR% XGOALS FOR% GOALS FOR% PDO
51.89 (9th) 52.60 (7th) 52.09 (10th) 50.59 (14th) 53.41 (9th) 100.44 (11th)

This is all very positive for the Oilers as the club has historically been below 50% for pretty much every shot and goal metric. The fact that they have close to a 52.0% share of the shot attempts is significant progress and indicates that they should be able to compete for a playoff spot this season. But if we look at how the Oilers do with McDavid on the ice and compare that to how the club does without him, things get a little interesting.

mcdavid-on-and-off-ice

Full article is at The Copper & Blue.

Talking Oilers on the CBC Edmonton News (TV)

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Joined Adrienne Pan on the CBC Edmonton News prior to the game against the Leafs. We talked about their current skid and the upcoming expansion draft, and also got into some of the Oilers’ numbers. We touched on the impact McDavid has had on the team, which I also wrote about over at The Copper & Blue.

The clip is here (starts around the 19:30 mark): CBC Edmonton

Also a big thank you to the CBC Edmonton team for putting together this graphic for our segment:

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