Alex Cobb has tendinitis in his right forearm and will miss his planned Opening Day start on April 6.

Cobb had been tabbed as the Opening Day starter for the Tampa Bay Rays.

"It's never easy to know you have to take a step back," Cobb said during a telephone conference call. "The whole situation could be a lot worse."

The Rays are hoping he'll return in mid-to-late April.