Jerry Hairston. Jr. (groin) is expected to be placed on the disabled list Tuesday. Hairston attempted to test his strained groin muscle during pre-game workouts on Monday, but he ended up limping off the field. With Mark Ellis (quad) also sidelined, Nick Punto will likely see most of the playing time at second base. It's not clear who will replace Hairston on the active roster, but Tony Gwynn Jr., Nick Buss, Elian Herrera and Scott Van Slyke are among the possibilities for a call-up.