Guyer went on the 15-day DL on June 5 with a left hamstring strain. He is hitting .271 with six home runs and 14 RBIs in 40 games. Guyer leads the American League in being hit by a pitch, which has happened to him 15 times.
Decker was selected from Triple-A Durham on June 15. He hit .138 with no home runs and no RBIs in 10 games.
Bill Chastain has covered the Rays for MLB.com since 2005.