The Pirates recalled left-hander Tony Watson from Class AAA Indianapolis today and designated Jose Ascanio for assignment.
Ascanio had struggled this year, and manager Clint Hurdle had recently reiterated his desire to have another left-hander in the bullpen. With Joe Beimel on the disabled list, Daniel Moskos was the only left-hander available.
Watson had a 2.45 ERA in 29 1/3 innings for the Indians. He made 22 appearances and struck out 29, allowing 11 walks.
Ascanio had a 7.11 ERA and allowed five runs in 6 1/3 innings.