He always won when I watched the AWA in Chicago in the mid-1970s.He let himself get tested a few times, like by Billy Robinson and Crusher Blackwell, but he never lsot. His last match with Bockwinkel was a win by sleeper.
Verne won a lot of Championships in his career, including the AWA World Championship ten times. He retired as AWA World Champ, so he lost at least that Championship nine times. Probably Mad Dog Vachon, The Crusher, and Nick Bockwinkel had the most success at beating him, having beaten Verne for the AWA World Title twice each.