He seemed to have trouble running the bases in Thursday's 7-4 loss to the Brewers at Miller Park.
"He says he's OK," Phillies manager Charlie Manuel said. "He was having a hard time getting out of the box. That's what I thought. That could have something to do with his back side and stuff, getting started. I'm sure he's going to have days when his foot feels better than other days. Sometimes it's easier to get loose. Sometimes it's not. Different days are different."
Manuel reiterated that Howard's running should be improved by next season.
"It takes a while, but he should be better," he said. "They're very happy with the way he's moving right now. I'm a little surprised he moves like he does because I've seen it the other way around."