Nick Bonino joined his teammates on the ice Sunday, but whether he plays alongside them Monday is still up in the air.

The Pittsburgh Penguins forward took the ice midway through the optional skate wearing some extra protection on his left skate, then departed before the end of the session.

Bonino got some work in with the Penguins' second power-play unit before exiting, saying afterward he isn't sure about his availability for Game 4 yet.

"It's day to day, (and) we'll see what happens (Monday), but (I) just wanted to get out there and move it a little bit," he said. "If I don't think, or the coaches or the trainers don't think I'd help the team, I won't be out there."

Bonino didn't play in Pittsburgh's Game 3 loss on Saturday night, the first game of the Stanley Cup Final in Nashville, after he arrived in Tennessee using crutches and wearing a walking boot Friday.

He suffered the injury blocking a shot in Game 2.

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