The Tampa Bay Devil Rays announced on Monday that pitcher Jae Seo accepted his outright assignment to Triple-A Durham. Seo, 30, was designated for assignment on June 2 after posting a 3-4 record with a 8.13 earned run average in 11 games, which included 10 starts. To take Seo's spot on the roster, the club recalled right-handed pitcher Jason Hammel from Durham.