Arizona Coyotes forward Derek Stepan entered the concussion protocol after Sunday's game against the Dallas Stars following a high hit from Jamie Oleksiak, head coach Rick Tocchet said postgame, according to The Athletic's Craig Morgan.
Oleksiak was initially handed a five-minute major on the play, but it was reduced to a two-minute minor upon further review.
The review process is new, and it was instituted this season after Vegas Golden Knights forward Cody Eakin was wrongfully given a five-minute major in the playoffs against the Sharks, sparking San Jose's unforgettable comeback in Game 7 last spring.
The Stars scored four unanswered goals to defeat the Coyotes 4-2 on Sunday.
Stepan has struggled offensively this season while recording just 12 points in 41 games.