Jonas Gustavsson is, too.
Red Wings coach Mike Babcock told reporters that doctors would ultimately decide if Zetterberg could play Thursday night for the first time since having back surgery Feb. 21. Zetterberg has been skating this week with his teammates.
Gustavsson started for the first time this postseason, replacing Jimmy Howard, who is out with the flu.
Detroit scratched forward Daniel Alfredsson for a second straight game because of his back injury. Babcock expects Alfredsson to be healthy enough to play Saturday afternoon at Boston in Game 5.
The Red Wings are playing 39-year-old forward Todd Bertuzzi in Game 4, when they will try to even the first-round series, and scratch 21-year-old forward Tomas Jurco.