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

Halfway through the period, with the pace of play slowing down and a 3-2 Vegas Golden Knights lead, Mark Stone leaned into an attempt to

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.

Golden Knights captain Mark Stone said he was tripped and didn’t dive headfirst into Dallas Stars defenseman Miro Heiskanen’s knee in the third period Tuesday.