Phillips has struggled in his last 13 starts entering Sunday's series finale against the Pirates -- batting .240 in the cleanup spot.
Reds manager Dusty Baker didn't feel the hamstring was still an issue for Phillips.
"No, his leg is better now," Baker said. "Sometimes you struggle. There is not always a reason or alibi for it, sometimes you don't hit. One thing is for sure, he's going to hit.
"When you start the season hurt you are playing catch up and he hasn't caught up yet. This hitting isn't that easy."