I met him at a Minor League Clearwater Threshers game at Spectrum Field in Clearwater, Florida in 2017.
The Threshers were hosting a promotion called Military Night, which Sgt. Slaughter was a part of, signing autographs for fans.
Sgt. Slaughter signed a 2005 Topps Heritage WWE card #86.
https://en.wikipedia.org/wiki/Sgt._Slaughter