An awkward swing by Will Middlebrooks last night resulted in a re-aggravation of his right wrist, the same one he broke last year. For now, he and the Red Sox believe the injury is not serious. “I was just frustrated because I’ve been busting my ass to get this thing back to where I can play,” said Middlebrooks, who left the game against the Baltimore Orioles in the first inning and then screamed an expletive as he headed to the clubhouse clutching his wrist. “In my head I was worried that there might be a setback. I don’t think there’s going to be.” X-rays were not taken, Middlebrooks said, because the pain diminished and tests showed no loss of strength. He will be examined by Red Sox physicians today in Fort Myers. “We’ll check how he comes in in the morning,” manager John Farrell said after the 5-3 loss to the Orioles. “If there’s overnight soreness or any kind of swelling, certainly precautionary tests will be done at that time, but everything was encouraging based on the manual tests tonight.” The third baseman was hoping his attempted check swing simply loosened some scar tissue around the fracture, which was sustained Aug. 10 when he was hit by a pitch. Middlebrooks said he has experienced “a little tightness but no real pain” in the right wrist area during batting practice this spring. He’s been told that tightness is to be expected in the aftermath of a fracture, and he was told last night that the scar tissue explanation is plausible. “That’s what we’re leaning toward. That’s our best bet,” Middlebrooks said. Hitting fifth in the lineup, Middlebrooks took a weird half-swing at a Chris Tillman pitch that was up. - See more at: