Los Angeles Dodgers right-hander Bobby Miller was struck in the head by a 106-mph comebacker during Thursday’s spring training opener in Phoenix but walked off the field on his own.

A candidate for the fifth spot in the Dodgers’ rotation, Miller remained in the dugout until the inning ended, then walked to the clubhouse sporting a large welt on the right side of his forehead. He’ll likely undergo concussion tests to determine the extent of any potential injury.

Miller, who turns 26 on April 5, burst onto the scene as a rookie in 2023, finishing 11-4 with a 3.76 ERA in 22 starts, but was limited to 13 starts in 2024 due to injuries and inconsistency and finished 2-4 with an 8.52 ERA. The Dodgers’ first-round pick in the 2020 draft didn’t pitch in the playoffs for the 2024 World Series champions.