Nevin said Sunday that Ohtani is not injured and will return to the rotation during a series at home against the Reds that begins Aug. 21. Ohtani was in the lineup for Sunday's 2-1 win over the Houston Astros and hit his 41st home run of the year.
"I've told you guys many times he knows his body better than anybody," Nevin said before the game. "I trust him when he talks about it. He's assured me there's no pain, there's no injury. He's got some regular arm fatigue that some go through at times. I trust him when he tells me this and he'll be ready for his next time out."
Nevin said Ohtani told him Saturday that he needed to take a start off. The right-hander will not take any time off as the team's designated hitter.
"He feels good at the plate," Nevin said. "He feels healthy swinging at bat. It's just the [throwing] right now, he's got some normal arm fatigue that happens at times."
Ohtani is 10-5 with a 3.17 ERA in 22 starts this season. He is hitting .305 with an American League-leading 41 homers and 84 RBIs.
The Associated Press contributed to this story.