Righthanded reliever Chris Carpenter cleared waivers and was outrighted to Triple A Pawtucket. He has been designated for assignment on Jan. 22 when the Red Sox signed Mike Napoli.
Carpenter, 27, was obtained from the Cubs last Feb. 21 as part of the compensation for Theo Epstein. He had elbow surgery on March 29. Carpenter had 21 appearances in the minors before joining the Red Sox in September.
In eight games, Carpenter pitched six innings. He allowed six earned runs on seven hits. Carpenter walked 10 and struck out two.