The Pirates have designated right-handed pitcher Jeremy Hefner for assignment, tweets Rob Biertempfel of the Pittsburgh Tribune-Review, who adds that the 40-man roster is now full.
The Bucs claimed Hefner, 25, off waivers from the Padres last month. The righty started 28 games for Triple-A Tucson in 2011, posting a 4.98 ERA with 6.9 K/9 and 3.5 BB/9 in 157 1/3 innings. He has a 3.84 ERA with 7.9 K/0 and 2.8 BB/9 in 688 2/3 career minor league innings over five seasons.
Hefner attended Oral Roberts and was a fifth-round pick of the Friars in 2007.