Red Sox Sign Aaron Cook

The Red Sox have agreed to terms with right-hander Aaron Cook on a minor league contract. The deal is worth $1.5MM prorated if Cook is called up to the Major Leagues, according to Rob Bradford and Alex Speier of WEEI.comMichael Silverman of the Boston Herald reports that Cook, who has passed his physical, could earn an additional $2MM in incentives based on games started. Ken Rosenthal of first reported the deal.

Cook, 33 next month, has spent his entire Major League career to date with the Rockies, posting a 4.53 ERA in 1,312 1/3 innings over parts of 10 seasons. His best work came during a four-year stretch from 2006-09, when he averaged 187 innings per season and recorded a 4.11 ERA. At his peak in 2008, Cook was worth as many as 4.7 wins above replacement, according to FanGraphs.

The groundballer (57.4% career rate) battled injuries each of the past three seasons, however, with his 97 innings in 2011 marking his fewest since 2005. With Cook falling short of expecations the past couple seasons, the Rockies unsurprisingly declined his $11MM 2012 option in October, making him a free agent for the first time.

With the Red Sox, Cook will compete for a rotation spot, according to Rosenthal. If he's healthy and inducing wormburners, he could prove to be a valuable, low-cost addition for the Sox. MLBTR's Tim Dierkes included Cook among such candidates in a post last week.

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