Will Middlebrooks was at Fenway Park on Thursday and tested his strained left hamstring with some running. He repeated that process on Friday and also took batting practice for the first time since he was hurt in Seattle on Sunday.
"I'm getting there," the rookie third baseman said. "I'm not taking groundballs today but maybe tomorrow. The running went pretty well. I'm not there yet. Could I play? If I needed to."
Middlebrooks said he hoped his recovery would progress enough where he could play in one of the games tomorrow.
"I want to get back out there," he said. "Doing everything I can."
The Red Sox are using rookie Mauro Gomez at third base tonight.