Zetterberg last played for the Red Wings on Feb. 8. He played one game for Sweden in the 2014 Sochi Olympics before leaving the tournament because of a back injury. He had surgery to repair a herniated disc on Feb. 21.
Zetterberg started the game on a line with Pavel Datsyuk and Justin Abdelkader. He skated with them in the morning skate before leaving the arena to visit with the team doctors, presumably to go through the testing protocol so he could be cleared to play.
He had 48 points in 45 regular-season games, and has 114 points in 123 career games in the Stanley Cup Playoffs.
He's, believe it or not, actually one of my favorite guys, and I've ended up trading him twice. I appreciate what he's done. He was one year away from being an unrestricted free agent, and I felt with this opportunity, that it was a chance that we were able to get somebody for him in Nick Bonino and Adam Clendening.
— Penguins GM Jim Rutherford on forward Brandon Sutter