CHICAGO (CBS) — The White Sox have placed starting pitcher Gavin Floyd on 15-day disabled list with a flexor muscle strain in his right arm.

Floyd suffered the injury in the third inning of Saturday’s loss to the Rays. He has an 0-4 record in five starts with a 5.18 ERA.

The Sox have called up right-hander Deunte Heath from Class AAA Charlotte. Heath, 27, is 0-0 in nine innings of relief work in five appearances for Charlotte.