Teaford was scheduled to start Sunday for the Kansas City Royals. He was recalled Thursday from Triple-A Omaha, where he was 0-1 with a 5.73 ERA in three games, including one start with Kansas City.
Adcock was 0-1 with a 2.51 ERA in four relief appearances in two previous stints with the Royals.
Adcock was the losing pitcher Wednesday against Baltimore. He went five innings and allowed one run - Adam Jones' home run in the 15th inning - and three hits and a walk.