Royals manager Ned Yost said after the game that Infante likely will miss more time than shortstop Alcides Escobar, who injured his left knee Friday night and hasn't played since. Escobar might be back in the lineup Monday.
Yost also hinted that the Royals may be forced to make another roster move because of the uncertainty surrounding Escobar and Infante.
Earlier this week, the Royals placed outfielder Alex Rios and closer Greg Holland on the disabled list.
Jeffrey Flanagan is a reporter for MLB.com. Follow him on Twitter at @FlannyMLB. This story was not subject to the approval of Major League Baseball or its clubs.