After 40 minutes of watching Tim Thomas last night, Tuukka Rask was informed that he would be on the ice for the final 20.

"Yeah, a little,'' Rask said, when asked if he was surprised to get the call. "But you've just got to be ready. That proves it again. You never know what can happen. You've got to stay focused for 60 minutes.''

Last night marked the second time Rask has replaced Thomas during a game this season. The first time, however, was for a different reason. On Oct. 29, the Bruins were trailing the Canadiens, 3-2, late in the third, and coach Claude Julien swapped out Thomas for Rask to gain several moments of rest for his players.