Source: Sox reach deal with RP Uehara

The Boston Red Sox on Thursday morning struck a one-year agreement with free-agent righthanded reliever Koji Uehara, according to a major league source. The deal is pending a physical.

The 37-year-old Uehara was one of the best relievers in baseball last season for the Texas Rangers, sporting a 1.75 ERA, a 0.64 WHIP and 43 strikeouts (compared to just three walks) in 36 innings. He made $4 million last season for the Rangers, missing more than a month with a lat injury.

Uehara has pitched in the majors the past four seasons after a successful career in Japan. He pitched with the Orioles from 2009-2011 before being dealt to the Rangers midseason.

Before departing Nashville's winter meetings on Thursday morning, Red Sox general manager Ben Cherington told reporters the team had made progress on an acquisition that had not been previously reported.

“Last night we were working on a couple of things, but nothing ready to announce," Cherington said. "We made progress on one thing, but it’s not quite teed up yet. Can’t say (if it was a signing or trade).’’