OAKLAND, Calif. – 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 today’s off day 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 while 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 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 RBI. Nick Punto played second in Pedroia’s place, with Mauro Gomez at third a day after being promoted.

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

The Red Sox still are 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.

ASTROS-MARLINS: Houston traded outfielder Carlos Lee to Miami for a pair of prospects — third baseman Matt Dominguez and left-handed pitcher Rob Rasmussen.

DODGERS: Outfielder Andre Ethier went on the 15-day DL with a strained left oblique.

ROYALS: Kansas City called up right-handers Nate Adcock and Louis Coleman from Triple-A Omaha, and designated outfielder Mitch Maier for assignment.

RANGERS: Yu Darvish won’t make his final start of the first half as Texas attempts to get him extra rest in his first year.

YANKEES: New York claimed outfielder Darnell McDonald off waivers from Boston.

MARINERS: Catcher Jesus Montero left the game against Baltimore after taking a hard foul ball off his mask and needing to be helped off the field.

WHITE SOX: Chicago placed reliever Jesse Crain on the 15-day DL with a right shoulder strain, retroactive to June 24.

ORIOLES: Baltimore recalled right-hander Chris Tillman from Triple-A Norfolk and optioned right-hander Steve Johnson back to the minors.

METS: New York recalled infielder Jordany Valdespin from Triple-A Buffalo and designated left-hander Justin Hampson for assignment.

PADRES: San Diego placed right-hander Andrew Cashner on the 15-day disabled list and recalled right-hander Brad Brach from Triple-A Tucson.