Less than a week after getting an injection in his sore right heel, David Ortiz won't rejoin the Red Sox until the team returns to Fenway Park on Friday. And it remains uncertain if he will play again this season. "God, I don't know," manager Bobby Valentine said before last night's 7-1 loss at Oakland Coliseum. "I haven't heard anything on that. I think he's going to try. That's just the last I heard."