He impressed in 2012 when he posted a 2.24 ERA in 148 2/3 innings in 2012 at Double-A Richmond. While he is not a hard thrower, his bread and butter was inducing groundouts.
This year, at Triple-A Fresno, he struggled with a 5.80 ERA in 108 2/3 innings. San Francisco had protected him from the Rule 5 Draft last offseason by placing him on the 40-man roster.
Chris Haft is a reporter for MLB.com. Andrew Owens is an associate reporter for MLB.com. Follow him on Twitter @OwensAndrew. This story was not subject to the approval of Major League Baseball or its clubs.