Time on ice competition plots for all 30 teams

Eric T.
August 17 2012 07:26AM

Duncan Keith
Duncan Keith had a negative Corsi Rel last year, but he's not weak competition
By Matt Boulton from Vancouver, Canada (Kane, Keith and Kopecky) [CC-BY-SA-2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons

Yesterday, we published an article about evaluating quality of competition by looking at the opponents' average time on ice. The best players typically see the most ice time, so a player whose opponents get a lot of minutes is probably facing tough competition. By this metric, top-line forwards appeared to face tougher competition than is suggested by other metrics.

The reason for this became clear when we separated out the quality of forwards and defensemen that a player faced. Even the offense-first forwards who are used against mediocre competition see their opponents' best defensemen. This opened up the interesting possibility of using quality of competition to evaluate not just the strength of the competition, but the type of situations -- facing good forwards and bad defensemen might be similar in difficulty to facing bad forwards and good defensemen, but it is a very different type of usage.

We showed a couple of examples, one from a team that matched their top forwards with the opposition's top forwards, and one from a team that had an offense-first scoring line and a defensive-minded shutdown line. A number of people inquired about their favorite team, so we decided to publish plots for each of the 30 teams for 2011-12.

Read Article | 21 Comments

A competition metric based on ice time

Eric T.
August 16 2012 07:49AM

Daniel Sedin facing a top-flight defenseman, as always
By kcxd (Canucks!) [CC-BY-2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons

Our traditional quality of competition metrics aim to answer the question "how tough was this player's competition?"

To do that, they start by assigning each player some kind of score to assess how tough an opponent he is; then to calculate a player's quality of competition, you average his opponents' scores together. There are a variety of choice for what score you use -- one metric uses the team's shot differential with that player on the ice, another looks at how the team's shot differential changed when he stepped on the ice.

Each of those scores has certain weaknesses, and the stat community recognizes that none of them can be used as a single metric to rank players and declare someone to be the best in the league. Yet in essence, that's what the quality of competition metrics do.

A little over a year ago, a group of analysts was asked what stats they turn to first. Such leaders in the field as Gabe Desjardins, Jonathan Willis, and Tom Awad all said that if they only get one stat, they're going to look at ice time.

It makes sense -- a player's ice time is a direct reflection of the coach's opinion of the player, and at this relatively early stage in the evolution of analytics, the coach's opinion is more accurate than any one individual statistic.

So why not try to build a quality of competition metric using ice time as the measure of how good each opponent is? Let's try it.

Read Article | 23 Comments

Detroit Red Wings 12-13 Preview: Life After Lidstrom

Jonathan Willis
August 15 2012 01:31PM

For years, the demise of the Detroit Red Wings has been popular to predict. With an older core, the idea that the team would fall into decline after it lost Yzerman, Fedorov, Shanahan, Hull and the rest was a popular one. It didn’t happen.

Now, Nicklas Lidstrom, the man who has arguably been the most important Red Wing for the last decade and a half, has finished his NHL career. Is the decline and fall of the Red Wings about to become reality?

Read Article | 6 Comments

Chicago Blackhawks 2012-13 Annual: Oddly Quiet

Josh L.
August 14 2012 12:42PM


Image from blogs.suntimes.com

The 2012 Chicago Blackhawks finished the regular season 10th in points and 5th in Fenwick Close, but their season ended with a thud in the first round against the Phoenix Coyotes as Mike Smith shut the door repeatedly on the Hawks scorers. The abrupt ending to the season overshadows the fact that the Hawks were a really good team in 2012 despite several flaws.

The flaws the Blackhawks were working with seem like they should have made more of an impact than they did. Both of Chicago's special teams units were poor. The goaltending was poor. The defense was sketchy after the top pairing of Duncan Keith and Brent Seabrook, and, after they dumped out of the failed Patrick Kane to center experiment in December, they didn't have an established second line center. Despite these holes the biggest acquisition of the Hawks' offseason thus far has been Sheldon Brookbank.

As serious as those problems are the Blackhawks were still one of the most dominant teams in the league. The lack of moves to this point in the offseason means they are going to need to improve internally to get back to the top of the league.

Read Article | 5 Comments

San Jose Sharks 12-13 Preview: Still One Of The Best Teams In The League

August 13 2012 12:30PM

Patrick Marleau
If it wasn't for bad luck, Marleau would have no luck at all
Photo by Kittenwaffles
via Wikimedia Commons

Let’s start with a counterfactual: had the San Jose Sharks won the 2010 or 2011 Stanley Cup, would they be considered the best post-lockout team? After all, San Jose has the second-best record since the lockout, averaging 106 points per season, four points behind the Detroit Red Wings, and they’ve won more playoff games and series than all but Detroit and the Pittsburgh Penguins.Had they won one of those cups – more recently than Detroit and Pittsburgh – would they not indeed be viewed as a dynasty as opposed to a team that has never been able to crack the NHL’s upper echelon?

The irony is that this counterfactual had something like a 25% chance of happening.In the 2009-10 and 2010-11 Western Conference Finals, the Vegas lines expected San Jose to win 46% of their games; they won 11%.On average, the Sharks should have won one of these series, and they would have then had a 50-50 shot at winning the Stanley Cup. (As bad as events have unfolded lately, Sharks fans should be happier than Flyers fans, who have lost their last six straight Stanley Cup Finals.)

Read Article | 11 Comments