Painter was removed from Wednesday's game against the Nationals due to left hamstring tightness, Lochlahn March of The Philadelphia Inquirer reports. He allowed one earned run on three hits and one walk while striking out four before departing.
Painter had tossed 63 pitches over four innings before the hamstring injury forced him out of the game prematurely. He's scheduled to undergo further evaluation Thursday, per March, but the Phillies are optimistic that the right-hander avoided a serious injury.