Blake Snell left Sunday's game with a left adductor strain in the first inning against the Los Angeles Dodgers.
The San Diego Padres left-hander retired his first two batters on popups to left field. He was facing Trea Turner when he suddenly left the mound with a 2-1 count, having thrown 11 pitches.
"It's something that he's dealt with in the past," Jayce Tingler said. "It usually doesn't come on until the sixth or seventh inning. For whatever reason, today it tightened up on him early. He says he's walking better now. He already feels a little bit better."
Snell is 7-6 with a 4.22 ERA.