An MRI was scheduled for Sunday, team officials said.
Howard hurt his right ankle with 2:35 left in the Mavericks'
112-92 loss to the Grizzlies when he stepped on teammate Devin
Harris' foot. He had to be helped off the floor.
The injury came as Howard was asserting himself as a strong
frontcourt complement to star Dirk Nowitzki. Howard led the
Mavericks with 25 points and 11 rebounds in a 103-90 victory at
Miami on Friday, and he had 17 points to go with Nowitzki's 27 in
the loss to Memphis, which snapped Dallas' seven-game winning
After the Monday-Tuesday trip to Toronto and Milwaukee, the
Mavericks play Thursday at home against San Antonio.