Weeks (hamstring) will undergo another MRI on Tuesday, Dennis Lin of the San Diego Union-Tribune reports.

EDGE Analysis

His initial MRI was inconclusive, so the Padres will send Weeks for another exam. A hamstring injury forced Weeks to the DL on Sunday, with Jose Pirela recalled in a corresponding move. Pirela is starting at second base Tuesday against lefty Jon Lester, but Adam Rosales seems like the favorite for playing time at the keystone until either Weeks or Cory Spangenberg (quad) returns.