Top 5 Mythical Heavyweight Matchups?

What are your picks?
Here's a starter;

Dempsey v Marciano
Dempsey v Louis
Liston v Jeffries
Ali v Louis
Ali v Johnson

 

Ali vs Louis
Liston vs Foreman
Frazier vs Marciano
Dempsey vs Marciano
Liston vs Louis

 

I thought about Liston v Foreman, but decided Liston v Jeffries would be more informative re Jeffries abilities:good

 

Dempsey v Marciano
Ali v Lewis
Louis v Liston
Frazier v Dempsey
Louis v Vitali K

 

Vlad vs Larry Holmes - Vlad
Dempsey vs Tyson - Dempsey
Vitali vs Frazier - Vitali
Marciano vs Louis -PRIME close tough fight
Dempsey vs Frazier- tough pick
Tyson vs Dempsey tough pick
Louis vs Tyson- i favor Louis by KO but he has to get past early rds
Louis vs Lewis- i favor Louis by KO but he has to get past early rds
Vlad vs Lewis- tough pick
Vitali vs Lewis both Prime- tough pick
Marciano VS Tunney I favor Marciano to catch him late

 

Makes it more interesting if you can't use anyone twice, so ...

Dempsey vs. Marciano
Ali vs. Louis
Tyson vs. Foreman
Holmes vs. Frazier
Holyfield vs. Liston

 

Ali vs. Louis
Ali vs. Tyson
Ali vs. Holmes
Bowe vs. Lewis
Marciao vs. Frazier

 

Bummy you have 2 different predictions for Dempsey vs. Tyson, you jus' reversed the names.

I do not think Dempsey could do it. Without much size & tying up ability, at least one, tyson will be too strong skilled &more than match Dempsey's speed.

 

We've got some fresh new leads that haven't been exhausted just yet. 5 damn fine matchups, no repeats:

Holmes vs Liston
Patterson vs Holyfield
Frazier vs Bowe
Tunney vs Foreman
Marciano vs Langford

 

Dempsey vs Marciano/Frazier
Joe Loius vs Ali
JJW vs Holmes
Forman vs Tyson
LL vs Klit again and little Klit.

 

FIVE mythical matches. Good job you're not a referee!:nono

 

Ezzard Charles vs Jack Dempsey
Rocky Marciano vs Gene Tunney
Lennox Lewis vs Young George Foreman
Jack Johnson vs Max Schmeling
Floyd Patterson vs Jack Sharkey

 

Holyfield-Charles
Dempsey-Johnson
Bowe-Lewis
Holmes-Foreman
Tunney-Walcott

 

I started with 5 and it shifted on my computer, got all messed up...I make a guess but hard to match these era's in reality...there was certain strengths back then, people were hard, but also strengths in each era so its only speculation.....still JD was exciting so was MT and other matches would be attrition fights, skill vs a different skill...Dempsey - Tyson would be early action but could last until the 10th prime vs prime...they would find each other quick and exchange JD also loved that kind of fight more than a chase

 

:good good match ups