Dustin Pedroia was sent to Boston for an examination of a left wrist that has bothered him for more than a week, Red Sox manager John Farrell said. The second baseman appeared to turn his wrist over diving for an Aramis Ramirez infield single in the eighth inning on April 4, and he hit the ground hard when Milwaukee’s Carlos Gomez upended him at second base on a force play an inning later. By Sunday afternoon, the soreness increased to the point that he couldn’t go through normal hitting drills. Pedroia was scratched from the lineup around four hours before the game, and he’ll undergo an examination in Boston first thing Monday morning. In the eight games since he suffered the injury, Pedroia has hit .139 with a pair of doubles. He has yet to draw a walk this season. Though prospect Mookie Betts has hit an astonishing .469 with a .514 on-base percentage and a .750 slugging percentage in 37 plate appearances at Double-A Portland, it’s unlikely that he would be first in line for a call-up. He’d have participated in big-league spring training if the Red Sox believed he was on the verge of a call-up. Instead, if Pedroia has to go on the disabled list, the Red Sox would be more likely to call upon Brock Holt, the infielder acquired with Joel Hanrahan a year ago. Holt is hitting .433 with a .514 on-base percentage and .633 slugging percentage in 35 plate appearances at Triple-A Pawtucket, and he was the initial call-up when Will Middlebrooks went on the disabled list a week ago. Holt has played 175 minor-league games at second base.