Aceves, 30, went 10-2 with two saves and a 2.61 ERA (33 ER/114.0 IP) in 55 games, including four starts, in his first season with the Red Sox in 2011. The right-hander set career marks in appearances, innings, strikeouts (80), holds (11) and games finished (15), and was the only Major Leaguer with as many as 10 wins and 2 saves last year. He went 9-1 with a 2.03 ERA (21 ER/93.0 IP) in 51 appearances out of the bullpen in 2011, and finished among American League relief leaders in innings (1st in Majors), wins (1st), ERA (6th) and opponent average (9th, .193). Aceves has appeared in 114 Major League games (9 starts) over parts of four seasons with the Yankees (2008-10) and Red Sox (2011), going 24-3 with four saves and a 2.93 ERA (78 ER/240.0 IP). His .889 career winning percentage is the best in Major League history among any pitcher with at least 14 decisions.
With today's agreement, designated hitter David Ortiz is the only remaining unsigned Red Sox player eligible for salary arbitration.