As an above poster pointed out: There should be two lists. Upsets at the time vs. Upsets with retrospect. For example Ali beating Liston was a major upset at the time. With retrospect, of course everyone would make Ali a massive favorite. Same with "Upset of the Year" Donaire KO'ing Darchinyan... Then there is Wonjongkam vs Jaro and Klitschko vs. Purrity (great shout outs above by the way). Wonjongkam and Klitschko should never lose those fights... Some Upsets of the Year turn out to just be the arrival of a previously unknown superstar.
Off those not yet mentioned I would add Sugar Ray Leonard W12 Marvin Hagler Other upsets which might not make most people’s top 10 but are probably amongst the most watchable for me. Breidis Prescott KO1 Amir Khan Marlon Starling KO11 Mark Breland Srisaket Sor Rungvisai W12 Roman Golzalez Iran Barkley KO3 Thomas Hearns Jose Luis Ramirez KO4 Edwin Rosario Edwin Rosario KO2 Livingstone Bramble
Williams KO of Miteff The way @choklab and Kompton described him, I thought he would've been a glorified clubfighter, who never won a fight in his life, let alone against a rated fighter! Let alone one with ones over men like, Johnson, Holman, Valdez, Meredos, and a draw with Chuvalo. Man was I shocked to read the following! "Cleveland (Big Cat) Williams, who shattered the title hopes of 7th ranked Alex Miteff with a 5th round TKO, set up a howl today for a shot at champion Floyd Patterson. If Williams ever looked as though he deserved a shot at the title, it was Tuesday night. He took command of the fight from Miteff from the start, opened a bad cut over his left eye in the 2nd, floored him for eight counts in the 3rd and 4th, and was beating him badly when referee Ernie Taylor mercifully ended it 1:32 deep into the 5th."
Most of the discussion on any boxing site is focused around the bigger men! “As go the heavyweights, so goes boxing.”
Ricky Hatton vs Kosta Tyszu ...I was a lurker on this forum at the time ..,and nobody gave Hatton a chance
I would say, at the time, Sugar Ray Leonard's win over Marvelous Marvin Hagler was also a shocker! Nobody I knew was expecting that.
1. Ingemar Johansson vs Floyd Patterson, June 26 1959 2. Eddie Machen vs Ingo, Sept 14 1958 3. John H. Stracey vs Jose Msntequilla Napoles, Dec 6 1975 4. Carlos Palomino vs John H. Stracey, June 22 1976 5. Carlos Monzon vs Nino Benvenuti, Nov 7 1970.