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 stats.hockeyanalysis.com 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 Total So my goal when creating then was to create an offensive defensive and overall total rating for each and every player. Now, here is a step by step guide

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2012 NHL free agent forwards

With the Los Angeles Kings on the verge of winning the Stanley Cup and teams already making moves towards next seasons (i.e. Vokoun to Pittsburgh) it is time to take a closer look at class of unrestricted free agents.  Today I’ll take a look at the free agent forwards. As I have mentioned previously, I feel the best and most reliable player ratings are my 5v5 zone start adjusted HARO+ offensive rating, HARD+ defensive rating and the combined HART+ rating (yes, I am biased but as far as single all inclusive ratings go, I feel these are the best) using

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Now with charts…

I have a ton of information on my stats website stats.hockeyanalysis.com 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 players makes the bubble charts too cluttered).  For example, if you did a search of all Maple Leaf Skaters with 500 minutes of 5v5 zone start adjusted ice time this

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What is Rick Nash?

So word has come out over the last day that Rick Nash is, at least on some level, available in a trade from the Blue Jackets.  So, the question is, who is Rick Nash and would you want him on your team? Nash has been a Blue Jacket from the day he was drafted first overall in 2002.  He has played 648 regular season games and has scored 277 goals and 527 points.  Since the lockout he is 10th in goals (only Ovechkin, Kovalchuk, Heatley, Iginla, Staal, Lecavalier, Marleau, Vanek and Hossa) and 25 in points.  He has a pair

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Players Worth by Position – Revised

I wrote an article a few weeks ago about the offensive and defensive contribution (i.e. their HARO+ or HARD+ rating multiplied by ice time) of each position (C, LW, RW, D and G) but I have come to realize that my methodology is incorrect and thus the conclusions are incorrect (at least when looking at league-wide results).  The reason is, in my rating system contribution is evenly distributed among the 5 players on the ice so if I sum up all contributions of all players playing at a particular position I should see each position be given an equal share,

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The Career Progression of Grabovski-Kulemin-MacArthur Line

The best and most consistent line for the Maple Leafs this past season was the Grabovski-Kulemin-MacArthur line.  This trio of forwards are all just entering their primes at ages 27, 24 and 26 respectively and they were the second, third and fourth leading point producers on the Leafs.  I thought it might be interesting to take a look at how these three guys careers have progressed up to now.  Here are each players basic stats over the past 4 seasons (3 for Kulemin) along with their 5v5 even strength HARO+, HARD+ and HART+ statistics (my HockeyAnalysis.com offense, defence and total

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Players Worth by Position

Before I get into the main subject of this post let me first point out that I have updated stats.hockeyanalysis.com to include all 1, 2, 3 and 4 year player ratings that can be calculated using the last 4 years of NHL data.  For more information on my player ratings read this. I generate offense, defense and overall ratings for each and every player in the NHL and I wanted to get an idea of how much each position contributes to the performance of the team.  To accomplish this I multiplied each players offensive and defensive ratings (HARO+, HARD+) by

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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 ice pairing stats which I had up a season or two ago and many of you found interesting as well as team stats but for now let me explain what

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Player Evaluation Model Improvements

On Monday I outlined an all-encompassing player evaluation model that allows us to evaluate every forward, defenseman and goalie under the same methodology.  In short, the system compares how many goals are scored for and against while a player is on the ice and compares it to how many goals scored for/against one should expect based on the quality of his line mates and opposition.  That model, I believe, makes a reasonable attempt at evaluating a players performance, but it can be improved. The first method of improvement is to utilize the additional information we have about the quality of

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