During that first round matchup, Jordan Eberle hit Andrew Cogliano into the boards from behind in Game 6, which left the Avalanche forward with two fractures in his C6 vertebrae. The NHL's Department of Player Safety decided that the hit didn't require supplemental discipline, meaning Eberle was allowed to play in a crucial Game 7 that Seattle won.
O'Connor got the best of Eberle in the brief tilt, landing several hard rights to the Kraken forward's head. Eventually, Eberle's jersey would be pulled over his head before the officials stepped in to break up the pair.
O'Connor's fight would go on to spark the Colorado Avalanche who walked away with a 4-1 win to stay undefeated on the season, with goaltender Alexandar Georgiev standing on his head, stopping 37 of 38 shots.