Madison Bumgarner is set to undergo an MRI after leaving his start against the New York Mets on Wednesday with left shoulder discomfort.
Bumgarner lasted just two innings, his shortest outing since Aug. 9, 2020. He allowed five earned runs on eight hits.
Torey Lovullo said he noticed Bumgarner was in some pain in the second inning.
"Once we discovered that discomfort, it was a no-brainer to get him out of the game," Lovullo said.
Bumgarner said he first started feeling the discomfort two to three weeks ago but didn't tell the Arizona Diamondbacks because he thought his shoulder would start feeling better.
"This is just bad judgement on my part," he said. "I thought it was going to get better and go away sooner. The last three to four days it's gotten worse and affected my pitching."