Sox add relief depth with Kyle Keller on minor-league pact
Boston signed reliever Kyle Keller to a minor-league deal with a Spring Training invitation, a $1.9 million base if he makes the MLB roster, and a mid-April assignment clause. Returning from four seasons in Japan with a strong 2.42 ERA in 152 1/3 NPB innings, Keller could provide non-roster bullpen depth for Boston under chief Chris Breslow.