Dustin Pedroia could not talk the Red Sox into a few days of rest this time. He's on the disabled list and could be there for a while.

The second baseman has a hyperextended right thumb and is expected to miss at least three weeks after being put in a cast. He was injured Tuesday trying to make a diving catch.

According to the Red Sox, Pedroia has "an injury to the volar plate" of his thumb. The volar plate is a thick ligament that prevents the thumb from being hyperextended.

"I'll be in the cast for a couple of weeks," Pedroia said Friday. "Then I should be healed enough to go out there and play."

Pedroia had X-rays and an MRI Thursday and was examined by team doctors. The results of his tests will be sent to two specialists — Dr. Donald Sheridan in Phoenix and Dr. Thomas Graham in Cleveland — to get their opinions.