OAKLAND, Calif. (AP) — Dustin Pedroia’s troublesome right thumb is still an issue, and the Red Sox second baseman will undergo further tests from a team doctor during Thursday’s off day back in Boston.

Pedroia was held out of the lineup for Wednesday’s series finale against the Oakland Athletics. He tore a muscle in the thumb in late May and missed six games. Pedroia said his thumb is sore in a different spot after he landed on the back side of his thumb trying to make a diving catch in the outfield during Tuesday night’s 3-2 loss.

“Not really hurt. I just think he needs these two days, and so does he,” manager Bobby Valentine said. “He’s a little stiff here and there.”

Valentine hopes Pedroia will be fine after two full days off to rest ahead of this weekend’s four-game series with the Yankees at Fenway Park, which includes a doubleheader Saturday.

“I was fine during the game, then after the game I was sore and then today I’m pretty sore,” Pedroia said. “It’s not in the area where I first got hurt. When I dove for that ball in right field, I don’t know what happened. Bobby wanted me to not play today since we have an off day tomorrow. I’m pretty frustrated. It stinks. I have a high pain tolerance.”

Pedroia wasn’t sure what the pain would be when he swings a bat again, but he was instructed not to try to do so Wednesday to let the thumb calm down. Pedroia is batting .266 with six home runs and 33 RBIs. Nick Punto played second in Pedroia’s place, with Mauro Gomez at third a day after being promoted.

Also Wednesday, Boston selected the contract of right-hander Justin Germano from Triple-A Pawtucket after optioning righty Clayton Mortensen to Triple-A after Tuesday night’s game.

The Red Sox are still waiting to decide on whether Will Middlebrooks needs a stint on the disabled list as he nurses a left hamstring injury. He hasn’t played since leaving Sunday’s game at Seattle after the top of the ninth with tightness. Valentine hopes to keep Middlebrooks off the DL considering he wouldn’t be available to return until after the All-Star break.

“Will felt better,” Valentine said. “He said he was a little better than yesterday.”

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