"It's a win-win," Yost said. "It's a day game after a night game. We're trying to find ways to give Sal some breaks, and Hayes has done a good job with Duffy."
Duffy struggled on the mound in the Royals' 9-3 loss Wednesday, allowing five earned runs over four-plus innings. Hayes broke out of an 0-for-27 hitless streak to start the season with a single in his second at-bat, then hit his first home run of the season, a solo blast in the seventh.
Lorenzo Cain also was out of the starting lineup on Wednesday, with Jarrod Dyson drawing a start in center field. Yost also tweaked the batting order for a struggling offense, with Alex Gordon hitting No. 3 and Eric Hosmer in the No. 5 slot. Shortstop Alcides Escobar moved up to No. 6 in the order.
Robert Falkoff is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.