Royals manager Ned Yost confirmed on Sunday that rookie right-hander Jakob Junis will start on Monday night in Oakland, a move that appeared likely when Trevor Cahill went on the disabled list earlier this week.
Junis joined the Royals here in Chicago on Sunday morning as they concluded a three-game series against the White Sox. The club will wait until Monday to make an official roster move.
Reliever Kevin McCarthy could be the leading candidate to return to the minors. He was called up on Thursday to offer bullpen depth after Cahill landed on the disabled list with rotator cuff weakness.