A pro can return to amatuer?

Yeah. Sloppiano is an undefeated "pro". He lost a couple "amateur" fights after going pro.

Yea, maybe in 1947. You can't do that anymore. You can't even enter a toughman contest and still keep your amateur status.

On March 17, 1947 Rocky Marciano made his professional debut against Lee Eperson (WKO3). Marciano then returned to the amateur ranks and fought in the Golden Gloves All-East Tournament in March of 1948. Marciano was beaten by Coley Wallace in this tournament. On July 12, 1948 he returned to the ring as a professional with a professional record of 1-0. wow, thats weird never knew that. can u still do that now though? i dont think so...

On March 17, 1947 Rocky Marciano made his professional debut against Lee Eperson (WKO3). Marciano then returned to the amateur ranks and fought in the Golden Gloves All-East Tournament in March of 1948. Marciano was beaten by Coley Wallace in this tournament. On July 12, 1948 he returned to the ring as a professional with a professional record of 1-0.

once u go pro, ur a pro, and can never go back to amateurs.

I belive its two different sports so i don't matter if you perticipated in one when trying out the other. But, if you boxed pro, you can't go back to the amatures, at least i ain't ever heard of a pro going back to the amatures in boxing.