Brian Wilson (elbow) could begin playing light catch Thursday. The Giants suggested when Wilson went on the DL that he could be back after 15 days, but their waiver claim of Heath Bell indicates they might be concerned about their injured closer. Of course, they could have just been blocking the D'Backs from making a claim, so it might be completely unrelated. Wilson is eligible to return on August 31 but will need to throw at least a few bullpen sessions and possibly go out on a short rehab assignment before returning.