Caminero, who turned 22 on July 5, leads all American League third basemen in homers during a breakout season. He is hitting .254 with 58 RBIs for the Rays, who moved within four games of first-place Toronto in the AL East on Wednesday night.

Tampa Bay Rays slugger Junior Caminero announced Wednesday he will take part in the Home Run Derby on Monday in Atlanta, then learned hours later he will start at third base for the AL squad in the A...