Arizona Diamondbacks right-hander Zac Gallen was placed on the 15-day injury list Sunday with inflammation in his pitching elbow.

Gallen reported elbow soreness to the team on Saturday and he was scratched from Sunday's scheduled start against the host Los Angeles Dodgers.

Gallen, 30, was sent back to Phoenix on Saturday and underwent imaging that displayed the nature of his ailment.

Arizona manager Torey Lovullo told reporters that there wasn't yet a timetable for how long Gallen will be sidelined.

Gallen (3-9, 6.34 ERA) has struggled this season but his problems recently increased. He is 0-5 with an 8.24 ERA over his past eight starts.

"Zac will be able to give you a little bit more detail as to exactly how he was feeling outing to outing," Lovullo said. "But he was taking the baseball, and I don't think he was throwing the ball terribly. I know that there were some moments where it was touch-and-go for him, but he's a warrior.

"He just wanted the ball, and then I think he felt something, he spoke up and that's why we decided to get him examined."

Gallen last pitched Tuesday during a 4-1 loss to the San Diego Padres. He gave up four runs and six hits over six innings while sustaining his fourth consecutive loss.

Gallen was an All-Star in 2023 when he won a career-best 17 games. He is 69-61 with a 3.83 ERA in 195 career starts with the Miami Marlins (2019) and Diamondbacks (2019-26).

Left-hander Mitch Bratt was recalled from Triple-A Reno to start against the Dodgers and he gave up three runs and three hits over three innings. The 23-year-old walked three and struck out none in his second big-league outing.

Six relievers followed Bratt and combined for six no-hit innings in a 5-3 victory that completed a three-game sweep at Dodger Stadium.