Brian Roberts (concussion) hasn't ruled out a return before the end of the season, but is more focused on avoiding a setback. "I certainly haven't given up hope that I'll be able to play at some point this season, but that's not my choice," said Roberts, who suffered a concussion on a head-first slide into second base on May 16. "We are taking every precaution to do what we can to make sure this doesn't happen again. I think that's our first and foremost [goal]." While the veteran second baseman is rehabbing at the team's spring training facility in Sarasota, he is still not participating in physical activity that requires a lot of exertion. That could change if he hears positive news from concussion specialist Dr. Michael Collins on Wednesday. Still, we wouldn't count on seeing him again this season.