It's a move that Dallas Mavericks coach Rick Carlisle said was born out of happenstance.

Usually, Shawn Marion is the small forward who's on the floor for the Mavericks in the fourth quarter during crunch time. But over the past two games, that spot has been taken by Vince Carter.

During the Mavericks' 123-121 triple-overtime loss to the Utah Jazz on Monday, Marion didn't play at all in the fourth quarter or in any of the three overtime periods. In Wednesday's 117-110 victory over the Houston Rockets, Marion left the game with 8.7 seconds remaining in the third quarter and never returned.