Cool article that sheds some insight into how the Hawks use analytics to evaluate everything. Sounds like a lot of it is just more advanced versions of Corsi and Fenwick but it's good to see how the Hawks were amongst the first to introduce these metrics into their decision making, and Q in particular. http://www.suntimes.com/sports/hockey/blackhawks/27179980-419/advanced-analytics-are-the-blackhawks-secret-formula-for-success.html#.U2TwHHi9LCT