Tampa Bay coach Jon Cooper is unsure if injured goalie Ben Bishop will return for Saturday night's Game 5 of the Stanley Cup Final against Chicago.

Bishop sat out the Lightning's 2-1 loss in Game 4 Wednesday night with an undisclosed lower body injury. Bishop didn't practice Friday, which was predetermined.

The series is tied 2-2.

Andrei Vasilevskiy will get another start if Bishop can't go. The 20-year-old Russian rookie won Game 2 in relief, and played well Wednesday in his first playoff start, giving Tampa Bay little reason to worry about the potentially precarious position.