Kadri has been offered a hearing from the league's Department of Player Safety following a cross-check he delivered to the face of Bruins winger Jake DeBrusk in the final minutes of Saturday's Game 2 in Boston.
Frederik Andersen made 37 saves in defeat.
DeBrusk said he underwent tests after the game and is still waiting for the results.
The Leafs will be looking to rebound Monday following a physical and emotional Game 2 that saw the Bruins come out swinging - literally and figuratively - following a sub-par performance in Toronto's emphatic 4-1 victory in the opener.
There would be no repeat on this night. Boston realized they needed to force the Leafs to move the puck quickly by pressuring them physically and Toronto didn't make the necessary adjustment. "We made a couple of key mistakes early".
Unfortunately, it doesn't help the Leafs when the Bruins are able to get away with plays what should be called for penalties.
Columbus and St. Louis have surprised many by winning the first two games on the road to take a commanding lead in their first-round series against Tampa Bay and Winnipeg. "You guys can go ahead and speculate". Pastrnak promptly fed a no-look-behind-the-back pass on a 2-on-1 to Marchand, who delayed before sliding a shot through Andersen's pads as Boston led 24-12 in shot attempts after one.
Muzzin crushed Torey Krug along the boards midway through the period on a hit that sent the wobbly Bruins defenceman to Boston's locker room.
As far as the Leafs are no doubt concerned, whatever works. The hit knocked DeBrusk to the ice and the Bruins forward did not return to the game.
"The only problem with Kadri's hit [on DeBrusk] is he didn't take the top f-ing row of DeBrusk's teeth out", Avery said. The Maple Leafs forward stayed down on the ice for several moments afterwards, but ultimately skated off on his own and returned for the start of the third period.
"I mean the league decides on all this kind of stuff", Leafs head coach Mike Babcock said of the Kadri ejection.
Kadri, who was suspended three games for boarding in last year's series, got a five-minute major and game misconduct for crossching DeBrusk in the head after the Bruins winger hit Patrick Marleau into the curved glass at the end of the Bruins' bench.
That goal, Kadri's third in 19 playoff games, ended Tuukka Rask's shutout and began a short rally for Toronto, which abruptly ended about three minutes later.
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