The Maple Leafs' Auston Matthews leaves the game after taking a knee from the Ducks' Radko Gudas. (0:26) Connor McDavid is calling on the NHL to investigate how it is doling out supplementary discipline. The Edmonton Oilers captain spoke out on Sunday about the league's suspension process and how the Department of Player Safety (DoPS) is coming to its conclusions. His comments came in the wake of controversy surrounding the DoPS's decision last week to suspend Anaheim Ducks defenseman Radko Gudas only five games for causing a season-ending injury to Maple Leafs forward Auston Matthews. That punishment was critiqued for being too light given Gudas' history -- he had been suspended four times previously -- and for the caliber of injury Matthews suffered as a result of Gudas' knee-on-knee hit. "If every time there is a suspension everybody complains about it, why don't we take a look at the process," McDavid said, according to TSN.…