The New York Mets placed first baseman Doug Mientkiewicz on the 15-day disabled list with a strained right hamstring prior to Sunday's game against the New York Yankees. Mientkiewicz, who left in the fifth inning of Saturday's 10-3 win over the Yankees, is batting just .219 but has nine home runs and 24 RBI in 62 games this season. In a related move, the Mets called up infielder Jose Offerman from Triple-A Norfolk. Offerman, who was signed by New York on June 8, has appeared in nine games with the Tides.