Cobb (elbow) was activated from the 60-day DL on Monday and is set to start Friday against the Blue Jays.
The Rays went ahead and activated Cobb prior to roster expansion, designating Steve Geltz as a corresponding move. He will start Friday against a potent Blue Jays lineup in his first big league start in almost two years after undergoing Tommy John surgery. For what it's worth, Cobb has been hit hard in his rehab starts, but his big league track record still makes him worth rostering in mid-sized formats over the rest of the season.