Moustakas will return to the lineup on Monday in Texas, according to Royals manager Ned Yost.
"I expect it to be warmer in Texas, so [we'll] get through today and Moose will be right back at it [Monday], for sure," Yost said.
Moustakas was initially scratched from Wednesday's game against Boston and went 1-for-4 in Thursday's series opener before sitting the series' final two games.
Irving Falu received his second consecutive start at third in place of Moustakas on Sunday, as the infielder entered the day hitting .500 (6-for-12) with two hits in each of his three starts. Falu, who spent nine-plus seasons in the Minors before getting called to the bigs on May 3, has been impressive, Yost said.
"It's fun to give [him] an opportunity," Yost said. "Our whole organization was thrilled when he got up here, because they know the work that he's put forth and the perseverance he's hung through to get here."