If all his wins were voided, what does that do to his record and rating in Boxrec? Often a fight is declared NC several months after for whatever reason, can years-old fights be the same? If so, will his BoxRec record be full of NCs and a couple of losses? This would affect not only his rating but other fighters, too.
Or will it be more like Primo Carnera, who had lots of fixed fights that people know about, but the record stands because it stood for so long officially? Is there a "statute of limitations" in how far we can go back to declare an NC?