Las Vegas’ Stone fell into Heiskanen’s left knee in an awkward collision, which forcing Dallas’ top defenseman out of the game.

Defenseman Miro Heiskanen was injured in the third period of the Dallas Stars’ 4-3 overtime victory over Vegas after taking a hit from Golden Knights captain Mark Stone.

Defenseman Miro Heiskanen was injured in the third period of the Stars' 4-3 overtime victory over Vegas on Tuesday night after taking a big hit from Golden Knights captain Mark Stone.

As if the Golden Knights’ rivalry with the Dallas Stars needed more fuel to the fire. Captain Mark Stone’s tripping penalty on Dallas defenseman Miro Heiskanen at 7:56 of the third period was a chaotic moment that proved to be the turning point in the Knights’ 4-3 overtime loss Tuesday at T-Mobile Arena.