Mark Teixeira (calf) will begin playing in instructional league games Monday in Tampa, Florida. Teixeira has been out of the Yankees' lineup since aggravating his left calf strain on September 8. He's aiming to return for New York's final series in September and would seem to be on track to meet that goal. The first baseman has an .814 OPS, 23 homers and 81 RBI in 120 games played this season.