The Royals placed pitcher Jason Vargas on the 15-day disabled list, the team announced on Saturday.
Vargas has a left flexor strain. He reported discomfort the day after his last start and couldn't complete his bullpen session on Friday, per Fox Sports Kansas City.
To replace him, the Royals called up Brandon Finnegan from Triple-A Omaha, where he was 0-2 with a 9.00 ERA.