*** UPDATE ***
Manny's hammy (sorry, had to say that) will keep him out of action for a week. The Dodgers, understandably, are taking the cautious approach with this. Still 3 weeks to go before action begins for real, so be patient.
Manny Ramirez gave it a go in left field for today's game against the Rockies, but he had to leave early with a sore left hamstring. He grounded out in his only at-bat of the game.
He decided to leave after running into the left field corner chasing a double by Troy Tulowitzki. Earlier in the game, he cautiously jogged down to 1st when grounding out, and was unable to track down a fly ball that landed in front of him.
He says he's day-to-day, so it sounds like a nagging injury that just needs to gradually heal on its own.