Possibly TBE, but there are many "IFS".

-I think Tyson would always have knocked out LArry Holmes. Holmes struggled badly with opponents earlier than Tyson whom Mike would have simply wasted.

- Holyfield got Tyson good but there is good reason to believe that a younger faster Mike could have done him over. However, it's equally plausible that Holyfield could have also tied up that Mike too.

- Lewis bashed him, but again, it's plausible that the faster Mike could have gotten in and dropped Lewis. Then again, the Mike that fought Lewis was much stronger too so I dunno.

- Mike neer fought Riddick Bowe or either Klitschko so it's unclear how he'd perform here. Riddick had a good chin and might pull a Buster on him often, he also beat Holyfield soundly. Vitali could have made mincemeat of Tyson with reasonable opinion. Wladimir post Sanders might never allow Tyson to operate as he likes and tie him up everytime he tried to swarm. Tyson was always troubled by very tall+good fighters and these guys would be the epitome of that.

- It isn't clear how Tyson would fare against the better+bigger HW's today, he certainly would not be as effective as he was against his own 80's opponents.

- George Foreman is perhaps the only nostalgic fighter worth considering could pose potential problems for Mike but in reality, is far too slow and uncoordinated and lacking any real skills to seriously handle Tyson.

- Other than that, Mike TYson knocks out every single pre 1980's boxer, Louis, Ali, all ATG's and all champs included, without fail. Most of them in the first few rounds, beyond any doubt.

I personally rank Mike #6. Below Holyfield cause he lost to him 2ce.

With speculation that he could beat him best for best, I give him #5 below..

Wladimir Klitschko, Vitali Klitschko, LEnnox Lewis, Riddick Bowe- For which there is no solid evidence that he'd be able to beat.

But these would all be highly dangerous fights and he certainly COULD have beaten them!