Getting injured is one of the unfortunate things that could happen to a rookie, especially if it's still in the offseason. Such was the luck of Boston Celtics rookie Robert Williams, who suffered a left knee contusion during Summer League.

Things are finally looking up for Williams, though, as his knee is getting better.

The important thing for Williams is to get fully ready before the season starts, even if that means skipping the early part of training camp. The Celtics can afford to rest him while he is still recuperating.

Williams has been infamous in his young NBA career so far. The 6-foot-10 big man has been late twice for official team activities ever since being picked 27th by Boston. Williams overslept his initial conference call with reporters after he was reportedly celebrating with his family and friends at Buffalo Wild Wings on draft night.

Williams also missed his initial Summer League practice due to a missed flight. Williams admitted head coach Brad Stevens talked to him about his tardiness and explained such opportunities might not come again for him. To try to avoid any further punctuality issues, the rookie opted to get an apartment near the team's facilities.