Relief pitcher Richard De Los Santos is returning to the Biscuits from Class AAA Durham.
De Los Santos was 1-1 with a 7.20 ERA in six appearances for the Bulls after being promoted a month ago. The right-hander had a 2.41 ERA in 20 outings with Montgomery before his promotion.
Juan Salas has to go back on the 40-man roster Tuesday after his suspension. We'll see who the Rays toss off the 40-man. Salas will take De Los Santos' roster spot in Durham.