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Edward Mujica’s late-season struggles (and arm/back problems) caused him to go from the Cardinals’ closer to out of their playoff plans, but it hasn’t stopped him from getting a nice payday. Jeff Passan of Yahoo! Sports reports that the right-hander has agreed to a two-year, $9.5 million deal with the Red Sox.

St. Louis acquired Mujica from Miami in mid-2012 and he went on to throw 91 innings with a 2.27 ERA and 68/7 K/BB ratio in the next one-and-a-half seasons, including saving 37 games this year after totaling four career saves previously.

He’ll slide into a setup role in front of closer Koji Uehara in Boston and it’s tough to imagine any bullpen duo in baseball posting a better K/BB ratio in 2014.

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