Macklin Celebrini crossed the line last night. Head coach Ryan Warsofsky watched his rookie drop Jeremy Swayman behind the net, sparking pure chaos in Boston.

The kid is a rookie sensation, but this was a veteran-level pest move.

He skated right behind the Boston Bruins' net and subtly kicked out Swayman's skates.

It was a blatant slipfoot. The star goaltender went crashing down hard to the ice, entirely unprotected.

Did the rookie look back to apologize? Not a chance. He barely batted an eye.

He just kept skating, eventually celebrating a goal as if nothing happened. The entire building was ready to riot at that exact moment.

With 91 points already in the bank, he's playing with supreme confidence. He knows he can get away with playing on the edge right now.

The Bruins' bench was absolutely furious.

Head coach Marco Sturm demanded an immediate penalty, but the officials missed the sneaky contact in real time.

A statement game for the rookie

Boston tried to make him pay physically after the incident. Every time he touched the puck, a black and gold jersey was aggressively flying his way.

He handled the heavy pressure with solid execution. His elite transition game gave the Bruins defenders absolute fits all night long.

Boston ended up losing their composure entirely in the third period.

San Jose capitalized repeatedly on the man advantage. Their crisp passing completely tore apart the usually reliable Bruins' penalty kill.

Celebrini got the last laugh in a convincing 4-2 win. He dictated the terms of engagement from the opening puck drop to the final horn.

Over his NHL career, we'll undoubtedly see more of this distinct edge. He isn't just a pure skill guy; he has a legitimate nasty streak.

We will see if the Department of Player Safety steps in with a fine. Until then, the Sharks rookie just keeps rolling through the league.