But with left-hander Tommy Milone starting for the A's on Sunday, Yost gave Moustakas a planned break for the first time since the Royals were at Oakland in the season's first week. Moustakas, who missed three games in May because of a hamstring ailment, did enter Sunday's game late in the eighth as a defensive replacement and singled in one at-bat.
Against most left-handers, Moustakas has remained in the lineup because he's been one of the Royals' most consistent hitters this season.
"I didn't want to give him a day off today. But sometimes you've got to pick your spots," Yost said. "He's been in there every single day, been playing his tail off, and it was just a good day to give him a little bit of a break."
Yuniesky Betancourt started at third base and batted fifth on Sunday -- going 1-for-4 and committing an error.