Veteran right-hander Kevin Millwood, who started 13 games for Triple-A Pawtucket but never got the call to Boston, has been granted his release, the PawSox announced.
Millwood was 5-1 with a 4.28 ERA with Pawtucket, allowing 79 hits in 73 2/3 innings while walking 25 and striking out 66.
Millwood, 36, was in his 19th professional season. He was signed by the Red Sox as a minor-league free agent on May 19 and joined the PawSox on June 1. He could have opted out of his contract as of mid-June when he didn't get called up to the big league team.
The Red Sox, seeking depth in their rotation, traded for Seattle left-hander Erik Bedard at the trade deadline rather than promote Millwood.
Millwood had signed with the Yankees late in spring training to a minor-league deal that allowed him to opt out if they didn't add him to the big-league roster by May 1.