Rask underwent off-season hip surgery and had worked his way back to the NHL, but unfortunately for Rask he just never felt right.
«I give him all the credit in the world,» said one of the sources. «He did everything right. He just didn't feel as good as he thought he would.»
Rask finishes his career 308 career wins in 564 career starts all of which were for the Bruins.
Source: The Athletic