Nazem Kadri has been suspended three games by the NHL Player Security Department.
The Toronto Maple Leafs forward was disciplined for tackling Boston Bruins forward Tommy Wingels in Game 1 of the East First round of the conference on Thursday.
Kadri will not be eligible to start Game 2 on Saturday (8 p.m. ET, NBC, CBC, TVAS). Toronto lost Game 1 of the series to the best of 7, 5-1.
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"We lost boys all year long," Maple Leafs trainer Mike Babbad said Friday. "Dig and play."
The incident occurred at 8:14 in the third period. Kadri received a penalty of five minutes for charging and bad behavior in the game. Wingels left the game with an undisclosed injury.
Kadri was third in 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 necessary.
In Toronto practice on Friday, Patrick Marleau took over as center in the second line with regular line partner Mitchell Marner . Zach Hyman took the place of Kadri.
Video: Kadri suspended three games per boarding
"I've been coming and going all year, it's a bit different, but it should be fine," Marleau said of the center.
Rookie forward Andreas Johnnson is likely to make his NHL playoff debut in fourth place with Tomas Plekanec and Kasperi Kapanen .
Wingels was being evaluated, said Bruce Cbadidy, the Bruins coach. If injured forward Riley Nash and Wingels are not available for Game 2, rookie forward Ryan Donato and forward Brian Gionta could enter the lineup.
Kadri has been suspended three times during the regular season for a total of 11 games.
NHL.com editor Mike Zeisberger and correspondent Matt Kalman contributed to this report.