Marion missed the win in Houston on Saturday night.
"It feels a lot better," Marion said.
Marion leads the club with an average of 7.1 rebounds a game.
Center Chris Kaman will also be a game-time decision, although he played Saturday night against the Rockets and had a great game. He scored 20 points on a heavily bruised ankle.
Tags: Basketball, Chris Kaman, Dallas, Dallas Mavericks, NBA, Shawn Marion