Malkin appeared to hurt his shoulder in the final minutes of regulation in a 5-4 overtime victory against Toronto on Saturday night when he collided with Maple Leafs forward James van Riemsdyk. Malkin returned to play one more shift but did not take the ice in overtime.
Coach Dan Bylsma says Malkin will be re-evaluated late Sunday night, but added the injury was not related to the concussion Malkin sustained last month that forced him to miss four games.
Malkin has five goals and 19 assists in 21 games this season for Pittsburgh.
I don't think today was my most solid game that I've had, some rebounds here and there. I know there's a lot of work to do, not every game is going to go as good as these last few. I've just got to make sure I keep working and keep trying to get better.
— Los Angeles Kings goaltender Martin Jones after stopping 38 of 39 shots in a 3-1 win over the Toronto Maple Leafs