The Toronto Maple Leafs forward was disciplined for boarding Boston Bruins forward Tommy Wingels in Game 1 of the Eastern Conference First Round on Thursday.
Kadri will not be eligible starting in Game 2 on Saturday (8 p.m. ET; NBC, CBC, TVAS). Toronto lost Game 1 of the best-of-7 series, 5-1.
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"We lost guys all year long," Maple Leafs coach Mike Babcock said Friday. "Dig in and play."
The incident occurred 8:14 into the third period. Kadri was given a five-minute penalty for charging and a game misconduct. Wingels left the game with an undisclosed injury.
Kadri was third on the Maple Leafs with 32 goals during the regular season (James van Riemsdyk, 36; Auston Matthews, 34). He would be eligible to return for Game 5 next Saturday, if it is necessary.
At Toronto practice Friday, Patrick Marleau took over as center on the second line with usual linemate Mitchell Marner. Zach Hyman took Kadri's place.