Rays starter Alex Cobb, who is returning from a concussion but had his first rehab outing cut short due to a blister, won't return for another rehab start until at least Tuesday, the Tampa Bay Times reports Sunday. 

Cobb made just two pitches before leaving his first rehab outing. The blister on his right index finger remains not sufficiently healed enough for him to take the mound again. He should still be able to rejoin the Tampa Bay rotation within the next few weeks.