Getting it right all the time is the obvious and laudable goal, but NHL director of officiating Stephen Walkom has more subtle motivation in play when it comes to the league's new coach's challenge for 2015-16.
"The final decision on these calls is left with officials on the ice, and that goes to the integrity of the game," Walkom said. "Our thought process has not been to make things perfect but rather to have a chance to re-judge a play and then decide if there's a better call."
The NHL has instituted the coach's challenge for two kinds of plays that lead to goals.