SEATTLE (AP) — Arizona Diamondbacks ace Zac Gallen left his start against the Seattle Mariners on Friday night after feeling tightness in his right hamstring, but manager Torey Lovullo said he hopes Gallen won’t miss any time.

Lovullo said after the D-backs’ 6-1 loss to Seattle that Gallen felt a spasm in his hamstring and the decision to pull him was precautionary.

“Just a right hamstring spasm and I think we really dodged a bullet,” Lovullo said. “Credit him. It’s hard to pull back in those situations and understand what you body is feeling and call out your catcher. I think he’s hopefully going to be fine. We’re going to continue to evaluate him and no other signs of anything greater.”

Gallen walked Mariners third baseman Josh Rojas leading off the sixth inning and then was removed by Lovullo in the middle of an at-bat against Julio Rodríguez. There was no obvious incident that caused an injury, but Gallen appeared bothered and, after discussion with an athletic trainer on the mound, left the game.