Stoneburner (b. 1987) was a 14th round pick by the Yankees in the 2009 June Amateur Draft out of Clemson University. He pitched in the Yankees organization from 2009 to 2014, reaching AAA. He had a record of 19-25 with 304 strike outs and a 3.92 ERA.
I mailed to Stoneburner on January 21 and got the card back on February 1, for an 11-day TAT.