Houston Astros manager Dusty Baker said that outfielder Michael Brantley (hamstring) is hitting and running on the field. Baker said that Brantley probably will not require a minor league rehab assignment before he returns to the major league roster, which could come early on the next road trip. Catcher Jason Castro (Achilles) is "a little further behind" Brantley. The left-handed hitting Brantley doesn't provide a ton of power (just three home runs), but he was hitting .305 (51-for-167) with ...