Royals pitcher Danny Duffy was placed on the disabled list on Monday with an elbow injury, with Nate Adcock coming up from Triple-A Omaha to take his place.
Duffy has a torn ulnar collateral ligament in his left elbow, according to the Royals. Duffy is expected to get a second opinion on his elbow from Dr. Lewis Yocum of Los Angeles, although the visit has not yet been scheduled.
Duffy pitched just two-thirds of an inning on Sunday against the White Sox before leaving the game.
In six starts for the Royals this season, the 23-year-old southpaw is 2-2 with a 3.90 ERA and 28 strikeouts. His last decision was in a 4-3 win over the Yankees on May 3, when he went five and one-third innings and gave up two runs on six hits.
Adcock, 24, has pitched in three games this season for the Royals, going 0-0 with a 2.89 ERA. He was optioned to Triple-A on Saturday when Greg Holland was activated from the DL. In four starts this season for Omaha, Adcock is 3-1 with a 1.37 ERA.
Adcock is expected to arrive from Omaha in time to join Kansas City (13-20, fourth in AL Central) when they take on Texas (23-12, first in AL West) at 8:05 p.m. in Arlington.