Dustin Pedroia goes on the disabled list with a broken foot:

The All-Star second baseman was placed on the 15-day disabled list Saturday with a broken left foot and it’s unclear how long he might be sidelined or whether he could need surgery. He said inserting a pin into the foot is an option to help him heal more quickly, but Pedroia will know more after he is examined by team doctors back home on Monday.

“In the past I’ve healed pretty quick,” Pedroia said. “I hope I do the same this time.”

The 2008 AL MVP fouled a ball off his foot during Friday night’s 5-4 loss to San Francisco and was removed from the game in the third inning after staying in to finish his plate appearance with a walk. Red Sox manager Terry Francona said tests Saturday revealed a non-displaced fracture in the middle of Pedroia’s left foot – the navicular bone – despite an initial result of negative X-rays late Friday.

Here’s a diagram showing the location of the bone. I would guess he’ll be out at least one month, since you really need to stay off your feet for them to heal properly. Chase Utley is the only second baseman to be better offensively than Pedroia since 2007, so the Red Sox will miss him.

Boston acquired Eric Patterson from Oakland to take Dustin’s place on the roster. Eric is a rather poor offensive player.