Report: Red Sox sign Koji Uehara to one-year, $4.25 million deal

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Gerry Fraley of the Dallas Morning News reports that the Red Sox and setup man Koji Uehara have agreed to a one-year deal, pending a physical.

FOXSports.com’s Jon Morosi says the contract has a $4.25 million base salary.

One imagines Uehara could have held out for a multiyear deal, given his career 2.89 ERA and 0.92 WHIP since arriving in the U.S. four years ago. However, he has dealt with arm problems. Last season, he had a 1.75 ERA and a ridiculous 43/3 K/BB ratio in 36 innings for Texas.

Uehara joins a Boston pen also set to include Andrew Bailey, Mark Melancon, Alfredo Aceves and Craig Breslow, with Junichi Tazawa, Daniel Bard, Clayton Mortensen, Andrew Miller and Franklin Morales (if he’s not in the rotation) also in the mix. It’s possible his addition might force his countryman, Tazawa, out of the mix. Bard is out of options, so the Red Sox will have to keep him in the majors or trade him.