He made a glove save in the second period and the puck hit his hand akwardly.
Fleury was seen getting medical treatment on his left hand a couple of times during the night.
Trainers taped up a visible cut and Fleury finished the game.
He is now listed as day-to-day.
Backup goalie Brent Johnson is also injured so, if Fleury cannot play tomorrow night in Vancouver, John Curry will get the start.
Fleury is 25-14-1 this season and has played two outstanding games in a row.
He has appeared in 41 of the Pens 49 games.
John Curry has not played in the NHL this year.
He went 2-1 in the big leagues last year and has a 16-13-1 record in the AHL this season.