Are coaches any good at identifying defensive players?

A while back I came up with a stat which at the time I called LT Index which is essentially the percentage of a players teams ice time when leading that the player is on the ice for divided by the percentage of a players teams ice time when trailing that the player is on the ice for (in 5v5 situations and only in games in which the player played)….

September 14, 2013

Estimating actual randomness in goal data

If you have been following the discussion between Eric T and I you will know that there has been a rigorous discussion/debate over where hockey analytics is at, where it is going, the benefits of applying “regression to the mean” to shooting percentages when evaluating players. For those who haven’t and want to read the whole debate you can start here, then read this, followed by this and then this….

June 18, 2013

Who are drags on the Maple Leafs possession game

Even though I am a proponent of shot quality and the idea that the percentages matter (shooting and save percentage) puck control and possession are still an important part of the game and the Maple Leafs are dreadful at it. One of the better easily available metrics for measuring possession is fenwick percentage (FF%) which is a measure of the percentage shot attempts (shots + shots that missed the net)…

April 17, 2013

How are HockeyAnalysis ratings (HARO, HARD, HART) calculated?

Every now and again someone asks me how I calculate HARO, HARD and HART ratings that you can find on and it is at that point I realize that I don’t have an up to date description of how they are calculated so today I endeavor to write one. First, let me define HARO, HARD and HART. HARO – Hockey Analysis Rating Offense HARD – Hockey Analysis Rating Defense HART – Hockey Analysis Rating…

April 11, 2013

Tips for using Hockey Fancy Stats

I often get asked questions about hockey analytics, hockey fancy stats, how to use them, what they mean, etc. and there are plenty of good places to find definitions of various hockey stats but sometimes what is more important than a definition is some guidelines on how to use them. So, with that said, here are several tips that I have for people using advanced hockey stats. Don’t over value…

April 5, 2013

Taking a look at QoC metrics on

I generally think that the majority of people give too much importance to quality of competition (QoC) and its impact on a players statistics but if we are going to use QoC metrics let’s at least try and use the best ones available. In this post I will take a look at some QoC metrics that are available on and explain why they might be better than those typically…

March 20, 2013

Now with charts…

I have a ton of information on my stats website but one of the things I have always wanted to do is to make it more visual and I’d like to announce the first step in that process.  Thanks to google and their cool google chart api I have now added bubble charts when you do a stats search that returns no more than 30 players (more than 30…

June 4, 2012

Zone Starts: Why We Shouldn't Care

There was a twitter conversation between Gabe Desjardins and David Staples last night in which Gabe suggested that Daniel Sedin’s heavy offensive zone start bias resulted in an additional 7-9 points that he would not have gotten if his zone starts were more evenly split between offensive and defensive zone.  When I saw this I immediately though that seemed like a really high number so I decided to take a…

February 21, 2012

Introducing New Stats Site

I have been pretty quiet here recently not because of a lack of things I want to write about but because I needed to get my stats site up and running first so I can reference it in my writings.  Plus, getting my stats site up has been on my todo list for a real long time.  There will be a lot more stats to come including my with/against on…

December 15, 2010