James Castleman and 12 other former Cowboys worked out in front of representatives from 27 different NFL teams at OSU's pro day on Thursday, March 12.
Castleman trained in Dallas leading up to the pro day and said he lost around 15 pounds preparing for the event.
The Amarillo, Texas native interviewed with a couple different NFL teams after concluding his work out.
The defensive lineman said his bowl game heroics at running back and athleticism impressed some NFL people.
Hear from Castleman on his day and goals from OSU pro day in the video above.