Taylor Chorney - Not As Bad As We Thought
Over the last couple of days we've looked at the zonestart stats for the Oilers in 2009-2010. Even though Pat Quinn and his "Rollin' Rollin' Rollin, Keep Movin' Movin' Movin" line changes were in effect most of the year, Shawn Horcoff, Ales Hemsky, Dustin Penner and Ethan Moreau got the bulk the tough starting assignments up front. On the back end, Quinn had no problems with putting out his worst in the defensive zone and Taylor Chorney suffered the brunt of the sitzkrieg coaching style.
Chorney's underlying stats also suffered because of his zonestart number. It's obvious that defensive zone start would have an impact on Corsi - it's difficult for a player to direct shots at the opponents' net when he's starting 175 feet away from that net. We've previously graphed the inverse relationship between Zonestart and Corsi at the team level, but Vic Ferrari and Jlikens have worked out the math at the individual level. Vic demonstrated that each net offensive zonestart is worth +.6 Fenwick, and Jlikens demonstrated that each net offensive zonestart is worth +.8 Corsi.
With that information, we can use a bit of simple math to understand how each player's starting position impacted their overall Corsi and what that means for a Tom Renney-coached team in 2010-2011.
Armed with Jlikens' Corsi information, we can normalize Edmonton's 2009-2010 individual Corsi values quite simply: multiply the net zonestart by .8, then add or subtract that value from the raw Corsi value to get Normalized Corsi. If we divide that number by even strength time on ice and multiply by sixty, we get Normalized Corsi/60, which we can easily compare to Desjardins' Corsi/60 value at www.behindthenet.ca, the world's finest statistical haberdashery. The table below shows the numbers needed to complete the calculations (save the even strength time on ice totals, available at behindthenet.ca), Normalized Corsi/60 and the Δ (Delta), or change in the number from Corsi/60 to Norm Corsi/60.
These tables are sortable by column -- simply click on the desired column header cell.
| NAME 09/10 | DZ | OZ | OPCT | ZS NET | Corsi/60 | Norm Corsi/60 | Δ |
| Ales Hemsky | 95 | 73 | 0.435 | -22 | 2.85 | 6.43 | 3.58 |
| Dustin Penner | 343 | 288 | 0.456 | -55 | 0.77 | 3.17 | 2.40 |
| Sam Gagner | 235 | 224 | 0.488 | -11 | -2.51 | -1.91 | 0.60 |
| Robert Nilsson | 213 | 197 | 0.480 | -16 | -5.46 | -4.40 | 1.06 |
| Ryan Jones | 114 | 103 | 0.475 | -11 | -6.75 | -5.54 | 1.21 |
| Gilbert Brule | 229 | 215 | 0.484 | -14 | -7.01 | -6.18 | 0.83 |
| Shawn Horcoff | 369 | 306 | 0.453 | -63 | -10.99 | -8.12 | 2.87 |
| Mike Comrie | 122 | 111 | 0.476 | -11 | -9.96 | -8.84 | 1.12 |
| Ryan Potulny | 234 | 208 | 0.471 | -26 | -10.78 | -9.12 | 1.66 |
| Andrew Cogliano | 260 | 251 | 0.491 | -9 | -10.27 | -9.83 | 0.44 |
| Patrick O'Sullivan | 260 | 259 | 0.499 | -1 | -13.35 | -13.30 | 0.05 |
| Zack Stortini | 205 | 179 | 0.466 | -26 | -17.44 | -15.64 | 1.80 |
| Fernando Pisani | 162 | 140 | 0.464 | -22 | -22.15 | -19.91 | 2.24 |
| Ethan Moreau | 296 | 245 | 0.453 | -51 | -22.99 | -20.30 | 2.69 |
| Jean-Francois Jacques | 131 | 139 | 0.515 | 8 | -20.25 | -20.98 | -0.73 |
- The full season players that improve the most are Shawn Horcoff, Ethan Moreau, Dustin Penner, and Fernando Pisani. Horcoff leaps over three players and Penner actually increases the gap between he and Sam Gagner, the man in second place.
- Jean-Francois Jacques, of course, looks worse when accounting for the fact that he was the only Oiler with more offensive zonestarts than defensive zonestarts.
- Yet again Robert Nilsson looks better by this metric. Some have suggested that these types of stats paint too rosy a picture for Nilsson, but hey, people get down on you when you're getting beat up by bad luck.
| Name 09/10 | DZ | OZ | OPCT | ZS NET | Corsi/60 | Norm Corsi/60 | Δ |
| Sheldon Souray | 182 | 202 | 0.522 | 20 | 2.28 | 0.93 | -1.35 |
| Tom Gilbert | 404 | 397 | 0.496 | -7 | -6.01 | -5.75 | 0.26 |
| Aaron Johnson | 151 | 128 | 0.459 | -23 | -9.29 | -7.26 | 2.03 |
| Ladislav Smid | 227 | 200 | 0.468 | -27 | -8.95 | -7.40 | 1.55 |
| Ryan Whitney | 396 | 377 | 0.488 | -19 | -8.51 | -7.87 | 0.64 |
| Taylor Chorney | 197 | 127 | 0.392 | -70 | -26.72 | -21.14 | 5.58 |
| Jason Strudwick | 298 | 254 | 0.460 | -44 | -24.53 | -22.41 | 2.12 |
- Sheldon Souray ended up with 17 more offensive starts in his limited time, and he was the only defender.
- The big gainer here, and on the team is Taylor Chorney. Chorney had the fifth-worst OPCT in the league amongst defensemen, and did so as a rookie. His improvement of 5.58/60 jumps him ahead of Jason Strudwick, his typical defensive partner through most of Chorney's games played last year. Relative Corsi also shows that Chorney was better than Strudwick. So, Norm Corsi would improve Chorney's lead on Strudwick in the Relative Corsi rankings as well. While Chorney has taken heat in many circles, and especially from me, it seems that it was Strudwick dragging Chorney down, not the other way around.
Normalizing Corsi for starting position on the ice seems trivial, but it does have a significant impact on individual players. Some, like Dustin Penner, will look even better - and his season already looked amazing. Others, like Taylor Chorney, had tough seasons that look better. Yet others, like Jason Strudwick, had tough seasons that look even worse. Now, off to talk Desjardins into tracking Norm and Rel Norm Corsi, Jim's weird cousins.
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all of this is crazy confusing i get zones starts but what the heck is a corsi an how is it supposed to track player value?
Corsi is shots directed at the net, a good indicator of zone time. A negative Corsi means a lot of time in the D zone.
Fenwick is Corsi minus blocked shots, and is a good indicator of scoring chances. A negative Fenwick suggests that someone’s getting outchanced.
SNN Sports - A theoretical Oilers blog (i.e. theoretically, I write stuff there). Link now 100% less broken.
I am going crazy
It doesn’t matter if Chorney is as bad as we thought or not. He is not going to be able to help the Oilers in the next two years on the big club’s array of rearguards. He is too chaotic and too one dimensional to be part o the short term plans (Kurtis Foster is taking up his offensive defenseman / PP specialist playing on the bottom pairing with a two year contract). If the Oilers do end up using him it will be in a long time, most likely just before he becomes a UFA.
So what to do? I say trade him . . . I have suggested that the Oilers have too many forward prospects and not enough defensive ones (and this is no secret). I am suggesting that the Oilers go shopping for a dman that will actually help the Oilers over the next two years, instead of running in place.
I think a package of Cogliano, Chorney (or Hartikainen or Petry), and Calgary’s 2011 third round pick should be able to attract some kind of interest on the trade market. (yes, I know it looks like the Oil trading a pile of unwanted parts for a shinny new bauble: but Cogliano is a good young player, Chorney or the other prospects are high reward gamble, and a third rounder is a valuable tbarginning chip near the trade deadline or draft day). The Oilers need a defensemen and need one badly.
Dallas hasn’t singed Grossman or Niskanen yet. Is Jack Johnson from the Kings either that defensively blind or that much of a prima donna that he would not be useful. Is Erik Johnson of the Blues a possibility? (while I don’t know if either of those four are worth the entire package above, but it should be explored).
Nick Shultz or Brent Burns from the Wild could be targeted: they are in the Gilbert/Whitney age range and could play seconding pairing for the next couple years. What would it cost to get Ryan Suter from the Predators? More then the package above I am guessing.
What about Tomas Kaberle? Is that package enough to get him (I’d say so), but is it a non-starter because Karberle is a UFA next season. Maybe the draft picks could be altered (say a 4th round 2012 pick if the Oilers do not sign Kaberle and a 2nd round 2012 pick if they do, and drop the 2011 picks completely) to get this deal done.
What about a package of Tom Poti and Karl Alzner for the Cogliano, Souray, Petry, and a second? That sends 5.175 million to Edmonton and 7 million to Capitals (5.4 for souray and 1.6 for Cogs). Washington gets a power play defense man in Souray (to go along with Green), a Cheap(ish) offensive winger in Cogliano, plus parts. There is multiple defense men still on the free agent market for the Caps to pick up for about 1 million dollars (plus who wouldn’t want to play with Ovie): that would replace Alzner for cheaper then his contract. Edmonton gets a veteran on a 1 year deal in Poti, and an upgrade over Petry in Alzner (in terms of both the player and when it will be ready for the NHL).
OK, why have I step into the deep end? Because the Oiler’s defense is terrible and needs to address as soon as possible. There is no hope for Chorney right now and there might never be hope for the kid in Oiler silks. He needs to be purged from the Oilers’ system, and the oilers need a trade (for the drama and the necessary blueliner).
one of the founders and most prolific writers of Bringing Back the Glory
They’ve put the development time into him in Hershey; I really don’t think the Caps are going to give up on Alzner for a dubious two-year solution when they can have him for at least five more years.
SNN Sports - A theoretical Oilers blog (i.e. theoretically, I write stuff there). Link now 100% less broken.
They get Cogs too . . . him plus parts is really for Alzner, and Poti is cap space minus a little for Souray.
one of the founders and most prolific writers of Bringing Back the Glory
I dunno, I still don’t do that deal if I’m Washington. Poti’s only around for one more year, anyway.
SNN Sports - A theoretical Oilers blog (i.e. theoretically, I write stuff there). Link now 100% less broken.
Derek, I’m not too sure what you’re saying here about Chorney. I agree he faced some very difficult circumstances, but I don’t think that means he’s any good. In terms of his pairing with Strudwick, it looked on the ice like they were dragging each other down, rather than one guy dragging down the other, and I think the numbers are pretty supportive of that. I’d also be interested in a chart similar to Bruce’s on ZoneFinish tracking expected Corsi by various starting positions. It would be interesting to see if such a chart conforms (generally) to the 0.6 Fenwick / 0.8 Corsi rule, or if it suggests some kind of modification. I have a feeling the latter may be true especially since Vic and Gabe apparently calculate ZoneStarts differently.
All the numbers tell us Chorney can’t play in the NHL right now. Arsene should have been on the team last season. I can’f figure out why Chorney was ahead of him.
As we know from watching players like Norm MacIver and Reijo Ruotsalainen, the small man’s game on defence is based on (at least) good skating and exceptional decision-making. Chorney’s skating is average, his decision-making below average at this point.
Can time in the AHL help his skating and decision-making? Does anyone really consider him a viable prospect any more?
He will have to have a whale of a year in the AHL for me to change my mind.
It’s hard to say,
by David Staples @ The Cult of Hockey on Aug 13, 2010 10:15 AM MDT up reply actions
Derek, I’m not too sure what you’re saying here about Chorney. I agree he faced some very difficult circumstances, but I don’t think that means he’s any good
The headline was tongue-in-cheek and the analysis was meant more to show more of Strudwick’s short-comings.
Editor of The Copper & Blue, and leader of The Cult Of Hartikainen.
MATH MATH MATH
It’s great breaking down the numbers this way and just for exercise/argument sake seeing what effect this all has. My question is what happens if we controlled for Face Offs won and lost. It’s simple to fire a garbage shot at the net off the draw with a dominant FO man, but it’s something entirely different if your center man can’t win a draw to save his life over the course of the game. You either have your OZS negated or you get hemmed in your zone and killed for someones elses in ability in the draw. Just a thought. Nice work though.
•The full season players that improve the most are Shawn Horcoff, Ethan Moreau, Dustin Penner, and Fernando Pisani.
… which is just another way of stating this:
Toughest ZoneStarts:
Horcoff 0.453
Moreau 0.453
Penner 0.456
Pisani 0.464
I think the word “improvement” is quite misleading. What you are calling an “improvement” I see as an “adjustment” for ZoneStarts. With that adjustment Ethan Moreau’s Corsi number isn’t quite as bad as it appears, but it still Sucks.
Put it this way, following the same principle I introduced in this article: Given his ZoneStarts, Moreau should have an “Expected Corsi/60” of -2.69. In reality his Corsi/60 was -22.99. My interpretation is that ZoneStarts can be blamed for ~12% of his terrible Corsi, and the other 88% can be blamed on terrible hockey.
One thing your analysis supports though, is the observation that JFJ was even worse than Ethan Moreau last year. Which is saying a mouthful right there.
Writer for The Copper & Blue and primary shareholder of Zorg Industries
"Never be ashamed of who you are" -- Jean-Baptiste Emanuel Zorg

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