Cobb, who underwent Tommy John surgery in May 2015, played catch on Monday at Tropicana Field and is slated to pitch on Wednesday for Class A Charlotte vs. Bradenton (Pirates). He is expected to throw one to two innings.
"Excited for him," Rays manager Kevin Cash said. "This has been a long road for him. ... It's got to be an exciting day for him, because I know it is for all of us to get him out in the ballgame."
Other Rays injury updates include the following:
• Right-hander Chase Whitley (Tommy John surgery) will throw a live batting practice session on Wednesday at The Trop.
• Brad Boxberger (left oblique strain) threw a light bullpen on Monday.
• Alex Colome (right medial biceps tendinitis) played catch on Monday.
• Kevin Kiermaier (left hand fracture), Steve Pearce (right hamstring strain) and Mikie Mahtook (left hand fracture) were off on Monday as they continued treatment. Mahtook will remain in a splint for another seven days.
Bill Chastain has covered the Rays for MLB.com since 2005. This story was not subject to the approval of Major League Baseball or its clubs.