Tyler Seguin never saw it coming.

In the second period of last night’s 4-3 loss to Montreal, the 21-year-old was skating up the ice when he got cross-checked from the side by Alexei Emelin. The Canadiens defenseman broke his stick on Seguin’s ribs, and the Bruins youngster fell to the ice and was slow to get up.

When he got to the bench, he slammed his stick on the ground and was taken to the locker room. By that time, Zdeno Chara was unloading uppercut after uppercut on Emelin. The Bruins captain took exception to the hit and immediately chased the Canadien down.

Seguin didn’t see that either, but heard plenty about it. The red-hot center said he would expect nothing less playing for this Bruins team.

“I kind of really didn’t see that guy coming. I don’t know if they call it a bridge or whatnot, but that guy kind of came across and his stick kind of came up on my side and that’s kind of it,” Seguin said. “I didn’t see (Chara’s fight), but everyone told me.

“That’s the character of our team. We’ve got each other’s backs. He’s the first guy I went up to when I went back to the dressing room after the period.”

Seguin returned to the ice minutes later, but the Bruins lost Chara for 17 minutes for his beatdown on Emelin. Seguin said it was frustrating that Chara got the brunt of the penalty after Emelin’s shot.

Prior to the hit, Seguin and his linemates were on fire. For the first time this season, Seguin scored in back-to-back games after tying the game at 1-1 in the first.

After a left-circle faceoff, Brad Marchand showed good hustle to get to the puck. Marchand punched it to Patrice Bergeron, who delivered a perfect pass to Seguin for a shot that easily beat Peter Budaj for his fifth goal of the season.