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. This story was not subject to the approval of Major League Baseball or its clubs.