Andrew Bynum was spotted doing on-court work on Monday, the same day he began running on a treadmill, and is tentatively targeting to return around the All-Star break. Bynum was doing a variety of things like shooting around the basket and taking free throws, but the exercises were all of extremely low impact and the Sixers are probably just gauging where he is in his rehab. Nevertheless, this is the first sign of real progress for a team that is desperate to get its big man healthy. Bynum remains out indefinitely, but the fact that he finally has a timetable is an indication real progress has been made.