The Indians have called up Nick Hagadone from Triple-A Columbus, and sent down Mark Lowe to clear the roster space.
Lowe pitched 4.1 innings for the Indians over the last 10 days, somehow only being charged with one run, despite allowing 5 hits and issuing 5 walks (errors and unearned runs are the secret to his ERA's success). Him being sent back down is no surprise.
Hagadone, a 28-year-old lefty, was Boston's 1st-round pick in 2007, and came over to the Tribe as part of the Victor Martinez/Justin Masterson trade. He's thrown a few innings of relief for the Indians in each of the last three seasons, but has never stuck in MLB, due in large part to his 5.59 walks per 9 innings (8th worst among 535 pitchers with 60+ innings during that time).
He's thrown 23.1 innings for Columbus so far this season, with a 3.09 ERA, an impressive 13.50 K/9, and a more palatable 3.47 BB/9. His fastball sits at 94 MPH or so, and he's got a slider he throws in the low 80s. Those pitches from a southpaw make him a potentially valuable bullpen weapon, but the results have not yet matched his stuff. Hopefully that changes this time around, and he becomes a valuable member of the team.