#Pirates RHP Jeff Karstens (shoulder) will throw up to 3 innings (45 pitches max) Monday with Double-A Altoona.
— Rob Biertempfel (@BiertempfelTrib) May 19, 2012
Jeff Karstens has been out of action ever since being pulled from an April 17th start with shoulder inflammation. It was just his 3rd start of the season.
I would assume the Bucs will try to get him three starts or so to make sure everything is working and feeling right and to get his arm strength up again.
Hopefully he makes it back without any bumps in the road, because the faster he is back, the faster Kevin Correia is out of the starting rotation.