A-Rod placed on 15-day DL NEW YORK (AP) — Alex Rodriguez was placed on the disabled list with a strained left calf on Saturday, taking one of the most potent bats out of the New York Yankees’ lineup just as the AL East pennant race really starts to heat up.Rodriguez returned to the lineup for Friday night’s series opener against the Seattle Mariners after missing three games with the calf injury. The slugger aggravated it again in his first at-bat, then watched the rest of the game from the dugout.Yankees manager Joe Girardi said before Saturday’s game that he hoped A-Rod would avoid a stint on the DL. General manager Brian Cashman met with team doctors and trainers later in the day, and they decided that it was best to be cautious.“He’s not any worse than he was before, we’re just going to play it safe and know we’ll have a player in 15 days,” Girardi said. “We just all felt, you know what?