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Todd McLellan's Deployment

We don't have a lot of tools that provide insight into the mind of the NHL head coach. One of the few we do is offensive and defensive deployment. In basic terms, coaches have a few options at the time of a face-off. They can decide which skaters to deploy based on zone, competition, score, time, and strength. In this first part of a series of articles we will take a look at how McLellan has elected to deploy his skaters with the former two, followed by subsequent articles on league wide deployment, and some specific team/game situations.

Star-divide

F_deployment_medium

D_deployment_medium

You may have seen a few of these graphs around the blogosphere. The basic idea is to separate players out based on their assignment. On the x-axis is CORSI rel QOC, which is our best guess at the level of competition a player faces on average (although the strength of this stat is heavily compromised by confounders). On the y-axis we have Defensive zone start% which is the percentage of shifts started in the defensive zone relative to the offensive zone. The bubble size indiates raw CORSI on (the +/- of all EV goals, shots, misses, and blocks). Teal is a positive CORSI, and orange is negative. As we move from bottom left to top right the assignment gets harder as players face increasing levels of competition, and more starts in their own zone. I also added dotted lines that represent SJ averages, allowing for distinct quadrants of assignments.

If you haven't heard yet, Joe Pavelski is beast mode this year. he's currently second in the NHL (>20GP) in CORSI rel QOC, and leading the team in defensive zone starts, while only 2nd to Thornton in raw CORSI for forwards. That's simply AB-surd. You can say what you want about his size and speed, but the guy shows up every game, and it shows in the numbers.

Andrew Murray safely made it through waivers, and although I agree with other people around here that I've liked what I've seen from him, it sure looks like McLellan doesn't trust him any farther than he can throw him, which is never into the defensive zone. Murray sits with the 5th worst CORSI rel QOC in the league, and is more than 2 standard deviations below the SJ mean for zone start%. I think time in WOR will be good for him, where he can tighten up his defensive game, and round out into a great player.

Brent Burns. He leads the sharks in raw CORSI with a whopping 16.04 shots directed at the opponents net more than his own (per 60 TOI), and seems to face relatively difficult competition, but McLellan has elected to use him predominantly in the offensive zone. In the past McLellan hasn't sheltered his top players, but there must be something he sees in Burns' defensive game that he doesn't like.

Other notables. Kinda disheartening to see Douglas Murray with the fat orange bubble, I hope he can turn it around going down the stretch. Havlat is still an enigma (or animole?), and it looks like Clowe and Couture still need a line-mate. I'd bet their zone start% would climb if they actually played with a real top 6 NHLer.

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Defense

Murray seems to have gotten better since coming back from injury – I think he suffered a bit playing w/ Boyle and his broken foot for the first part of the season.

I really think they need to go back to Vlasic/Burns, Boyle/Murray, Braun/White and stick with it for a while…two of those pairing were good together and I think Boyle and Murray can get back to where they were the past two season.

The Sharks definitely need a better player in their top 6 – I’m starting to think that they may not be able to wait for Havlat to get healthy, but even a slight upgrade to what Ferriero brings would help a lot.

by milanahalek on Feb 9, 2012 12:21 PM PST reply actions  

Havlat

Any updates on his injury? Hasn’t he reached his 6-8 week timeline for return already?

by logancouturesteeth on Feb 9, 2012 2:10 PM PST up reply actions  

Haven't heard any updates

But it’ll be 8 weeks come this Saturday (he got injured Dec. 17th).

"It was good to get banged and give a few bangs." - Jonathan Cheechoo

by CheechYou on Feb 9, 2012 2:18 PM PST up reply actions  

Havlat

I believe his 8 weeks is up on the 21st (date of surgery) and he’s expected to be playing in early to mid march. He’s still not on skates and there haven’t been any updates about his projected return.

by milanahalek on Feb 9, 2012 2:49 PM PST up reply actions  

Oh yeah

I forgot that it started from the surgery. Thanks

"It was good to get banged and give a few bangs." - Jonathan Cheechoo

by CheechYou on Feb 9, 2012 7:36 PM PST up reply actions  

Corsi Question

What are your thoughts on raw Corsi vs. Corsi relative to QoC?

by milanahalek on Feb 9, 2012 1:41 PM PST reply actions  

do you mean CORSI QOC vs. CORSI rel QOC? So QOC comes in 3 flavors.

Qual Comp which is the average plus-minus of a players competition. Plus-minus is a weak predictive statistic that should only be used when talking about a players previous contributions. I dont use it too often because its not repeatable, and I dont use it in analysis that often.

CORSI QOC is a little better, but again suffers from the same problem that plus-minus does. If you play on a good team, your CORSI will drift upwards because your surrounded by players who are playing well. Case in point is Thornton’s ability to drive his teammates CORSI through the roof.

CORSI rel QOC sort of gets at what we want. Although CORSI rel is not that useful for comparing players across teams, it is useful in comparing players within a team. Generally, The top 6 players on a team are going to have positive CORSI rel, while the bottom 6 will have negative CORSI rel, regardless of the raw CORSI. We use this to our advantage in CORSI rel QOC. A positive CORSI rel QOC indicates a player who is playing against the top 6, (specifically against a teams top CORSI players), while a negative indicates playing against the bottom 6, (specifically against the players on a team with the worst CORSI).

That being said, there are lots of confounders here. Often the strength of a players competition is dictated by the other team’s decision and not the coach. As well as a bunch of stuff mentioned in the article above. It’s not perfect, but it gives us a little insight.

QOC and QOT are areas of hockey that will always be very difficult to asses. The game is intricately tied to how players react to each other, and so the ability of separating players out from each other makes it much more difficult than other sports.

by SnarkSD on Feb 9, 2012 3:22 PM PST up reply actions  

I understand all of those stats

And I was specifically wondering about Murray…I’m having a hard time figuring out why his relative Corsi is so bad this year.

I was debating w/ someone that he is, in fact, still a top 4 d-man on the Sharks (in comparison to Vandy, Demers, Braun, White) even though he’s not quite at the same level he has been the past 2 seasons.

by milanahalek on Feb 9, 2012 3:34 PM PST up reply actions  

I should say

I mostly understand all of those stats…sorry, some of them still confuse me a bit.

by milanahalek on Feb 9, 2012 3:53 PM PST up reply actions  

His CORSI rel is bad mostly because he was terrible in the beginning of the year. I’m not totally sure why he wasn’t playing well, some say it was playing with Boyle, but Murray hasn’t quite bounced back the way Boyle has. I think what the chart above shows that McLellan still thinks Murray is a top 4 D. He’s in the upper right quadrant; meaning hes playing tough minutes in his own zone. In comparison White, Demers, Braun all play in a little more forgiving situations, and are average 2+ less EV minutes a night compared to Murray.

by SnarkSD on Feb 9, 2012 4:32 PM PST up reply actions  

Seriously why the hell would you want White on the ice?
Every game i see him he is terrible making me reminisce of Niclas Wallin bumbling around the ice.
I get it he’s tall but the dude looks like he can barely skate

by withintheruins14 on Feb 9, 2012 2:03 PM PST reply actions  

Not really fair to White

He wasn’t particularly strong in his first game back from injury, and obviously struggled last night, but the games in between—and maybe the ten or so before he got hurt—he was playing really solid defensively. There was a really nice rapport with Braun, so maybe the change in pairings last night threw him off.

White certainly had me doubting him at the start of the year with his play, but I think it’s improved greatly since then.

Winter. Time to eat fat and watch hockey. -- Margaret Atwood

by Timorous Me on Feb 9, 2012 8:36 PM PST up reply actions   1 recs

These are awesome.

Pavelski and Vlasic have been incredible this season.

Andrew Murray was certainly buoyed by sheltered minutes but I give the dude credit for at least being able to drive possession even if it was in easy circumstances. Of course it’s not at all difficult or expensive to find a player capable of not hurting his team when starting most of his shifts in the good end and playing against fourth liners so I understand management’s decision to waive him.

by The Neutral on Feb 9, 2012 2:09 PM PST reply actions  

Joe really should be in the Selke talk

and it’s embarrasing if he isnt. In quite possible the most rigourous attempt to seperate a player by QOT and QOC Pavs comes up in shinning colors, and his DGVT this year is tops on the team too.

by SnarkSD on Feb 9, 2012 3:27 PM PST up reply actions  

All postseason awards usually need some kind of non-advanced stat

to justify the award. I’m not saying it’s right…but it’s the way it is since they are voted on by people who a) don’t watch all the games and b) don’t necessarily understand advanced stats like Corsi Rel QOC.

For the Selke, the #1 stat that most voters look at is Takeaways (and relationship to Giveaways), the distant 2nd and 3rd stats voters consider are Blocks and Faceoff %.

Again, not saying it’s right, just the reality of how the awards are given out.

Right now, it’s a 3-man race between Datsyuk, Toews, and O’Reilly….with everyone else chasing.

by BillytheSid on Feb 9, 2012 4:02 PM PST up reply actions  

Fully agreed but I doubt the majority of the voters stay up to watch Sharks games and as BillytheSid points out, the numbers they look at are hardly even germane to the process of determining the best defensive forward.

If Toews finishes in the top 3 in voting despite starting something like 63% of his EV shifts in the offensive zone this year it should be enough proof that a lot of voters have no idea what they’re doing in voting for that award. It was bad enough Kesler got it last year when he wasn’t even the best defensive forward on his own team (of course, neither was Datsyuk IMO).

by The Neutral on Feb 9, 2012 8:22 PM PST up reply actions  

I never have a problem with Datsyuk

being in the conversation. His Takeaway/Giveaway ratio is usually just absurd (again this year) and he just takes the puck away from people at-will it seems. But I also happen to think Datsyuk is the best all-around player in the NHL in general…so…

by BillytheSid on Feb 9, 2012 10:18 PM PST up reply actions  

Datsyuk’s awesome but Zetterberg was usually the guy doing the heaviest lifting defensively on the Red Wings the year Pavel won. I definitely have much less of a problem with Datsyuk winning than Kesler though.

by The Neutral on Feb 10, 2012 12:53 AM PST up reply actions  

but there must be something he sees in Burns’ defensive game that he doesn’t like

Not neccesarily. Whereas as guys like Vlasic and Murray can pick up the defensive tab, neither of them has Burns’ offensive ability. Speaks to San Jose’s defensive depth that they can afford to do that.

All that being said, none would confuse Brent Burns for Nick Lidstrom or Chris Pronger defensivley (not yet, anyway).

by samspade on Feb 9, 2012 11:44 PM PST reply actions  

That’s totally possible. My comment stems from T Mac’s historical line matching (usually 1v1s) instead of zone matching. Though as to point out, he may be adjusting this year slightly.

by SnarkSD on Feb 10, 2012 7:48 AM PST via mobile up reply actions  

Just an aesthetic note. Having the zone start on the vertical axis is not intuitive. The ice is typically presented left to right by running it up and down your reader has to rotate their typical viewpoint 90 degrees.

by Mogen_david on Feb 10, 2012 8:13 AM PST reply actions  

lol

Yea, I actually did think about this a little bit. I choose the axes by 1) convention, and 2) to have the most separation bottom left to top right, as I think most people are used to reading graphs. I’ll make note of it, try it out and see if it looks better the other way.

by SnarkSD on Feb 10, 2012 1:38 PM PST up reply actions  

Way too late on this

But phenomenal article. You and The Neutral have been absolutely phenomenal in your short time here.

Absolutely love it.

"The world is a comedy to those that think; a tragedy to those that feel." - Horace Walpole
Fear The Fin: Where Selling Your Soul Is The Likely Solution

by Mr. Plank on Feb 10, 2012 8:45 AM PST via iPhone app reply actions  

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