Do we count David Arndt? I can't tell for sure if they seeded the 1946 NCAAs. He was a 2X returning champ and was placed on the end of the bracket. In 1941 and 1942 he won it as the #1 seed.
Looks like you are correct. I was not thinking of current wrestlers with remaining eligibility. However, MM fits my original question.
Does anyone know who accomplished this before MM?