Everybody knows about center Connor McDavid's scoring contributions, but he also is the best player in the NHL at drawing penalties and maintaining his own discipline.
McDavid drew 51 penalties last season and took 13, a League-leading difference of plus-38, according to my book, "Hockey Abstract 2017." Forward Johnny Gaudreau of the Calgary Flames was plus-34, the only other player better than plus-22.
A player's penalty differential can be placed into context by adjusting it based on the rates at which forwards and defensemen draw and take penalties, and in different manpower situations. A typical forward assigned the same ice time as McDavid at 5-on-5, 5-on-4 and 4-on-5 would have drawn 18.0 penalties and taken 16.1, for a penalty differential of plus-1.9. McDavid drew 41 penalties and took nine in those three situations, for a penalty differential of plus-32, or 30.1 higher than expected, which also led the NHL.
What is that worth in terms of goals? If McDavid is worth 30.1 extra power-play opportunities per season, and the Oilers were to score on 19.1 percent of their power plays (the League average), then he would be worth an extra 5.75 goals per season. That equates to about two extra points in the standings.