The Pirates announced that they designated Michael Crotta for assignment to create 40-man roster space for newly-acquired outfielder Ryan Ludwick. The 2006 draft pick made his MLB debut in April, but hasn't pitched in the Majors since May.
Crotta, 26, appeared in 15 games for the Pirates this year, posting a 9.28 ERA with 5.9 K/9 and 4.2 BB/9 in 10 2/3 innings. He appeared in 12 minor league games for the Pirates' top two affiliates and has spent considerable time on the disabled list with right elbow inflammation.