Pirates purchased the contract of RHP Duke Welker from Double-A Altoona.
Welker, who turns 26 in February, compiled a 2.76 ERA and 50/26 K/BB ratio over 62 innings as a reliever this season between High-A Bradenton and Double-A Altoona. The 2007 second-round pick has made some encouraging strides with his command, so the Pirates are hoping he has finally turned a corner.