Michael Bourn (hamstring) out on the field early Monday running the bases.

Running the bases is obviously the key here and a strong indication that Bourn is finally ready for a rehab assignment. If his hamstring is all healed up and he's running fine over one or two rehab games, then he probably won't be out for much longer. It is very possible that he could be ready by the time we hit the weekend here.ANALYST: Howard Bender