10 Heaviest Boxers Of All Time, Ranked By Weight

Highlights

• Andy Ruiz Jr. shocked the world by becoming the heavyweight champion after defeating Anthony Joshua in an upset victory.
• Boxer Salvador Farnetti gained notoriety for being knocked out in just 50 seconds by Eric Esch, weighing 342.5 lbs at his peak.
• Terry Tuteru never won a professional fight and remained consistent in his weight above 300 lbs, struggling in the heavyweight division.

Throughout the history of boxing, great fighters have graced the ring and faced both victory and defeat. Over time, many have set and broken several records winning titles and delivering knockouts in record times. But there have been some who even with their skills and technique have almost broken the weighing scale.

These bygone behemoths of boxing may be different from the regular giants of boxing like Ali, Tyson and Fury, but they have left their marks and records in pounds or kilograms. So, by rankings of weight, here are the ten heaviest boxers of all time in the sport's history.

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10 Andy Ruiz Jr. - 297.5 Lbs / 135 Kg

His Stunning Upset Victory Over Anthony Joshua To Win The Heavyweight Title Made Headlines

The most popular pick on this list, Andy Ruiz Jr. is also the most successful one on this list. Ruiz gained widespread attention for his upset victory against British heavyweight Anthony Joshua to claim the heavyweight title. Andy Ruiz Jr. weighed a shocking 297 pounds for his debut but it's didn't prevent him from securing the win.

9 Salvador Farnetti - 342.5 Lbs / 155 Kg

Lost Against Eric "Butterbean" Esch In The First Round

Having fought only 21 times between 2001 and 2009, Sal Farnetti remains a pretty obscure fighter in the boxing world. His most famous moment came in 2004 when he got knocked out within 50 seconds of the first round in his fight against Eric Esch. It was only in his last fight against Lionel Davis that he weighed a career-high of 342.5 lbs.

8 Kevin Karusa - 346.5 Lbs / 157 Kgs

Fought Only 3 Fights In His Professional Career

Having debuted at 253 pounds in March 2009, the New Zealander, Karusa, experienced a notable weight gain, reaching 346.5 pounds by the last fight of his career later that year. Unfortunately, he faced defeat at the hands of Mark de Mori, who, in a twist of fate, was later knocked out in the first round by David Haye.

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7 Dennis Lewandowski - 352 Lbs / 160 Kgs

Has Won Multiple Heavyweight Titles In Germany

German heavyweight Lewandowski, also known as The Ostseehammer, made his professional debut on November 8, 2014, against Zoltan Beres, securing a victory by point decision. Lewandowski established himself as a towering presence in the heavyweight division in Europe, going up against the likes of Tom Schwarz, another German heavyweight who fought and lost to Tyson Fury.

6 Gabe Brown - 367 Lbs / 166.5 Kgs

His Career Heaviest Came Against His First Bout Against Saul Montana

Gabe Brown began his career in the late '90s at a relatively normal weight of 260 to 300 pounds. He took a three-year hiatus and returned overweight at 330 pounds. Despite facing other heavyweight boxers like Bruce Sheldon, Bert Cooper and Samuel Peter, Brown's career ended with only 14 fights, including a loss to Peter at a staggering 361 pounds. His heaviest-ever weigh-in came against Saul Montana at 367 pounds.

5 Terry Tuteru - 368 Lbs / 167 Kgs

Never Won A Professional Fight In His Career

Terry Tuteru joins a long list of heavyweight boxers who have never won a fight. Nicknamed Fasa Terry Tini, he wasn't very good at fighting, earning only a draw and consistently weighing above 300 lbs in all his fights. He also competes in kickboxing as a heavyweight.

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4 Chauncy Welliver - 378 Lbs / 171.5 Kgs

In His 13 Losses, He Has Never Been Knocked Down Even Once

American heavyweight boxer, Chauncy Welliver with a started his pro career in 2003 and boasted an impressive stat of having never been knocked out in his entire career. Despite carrying extra weight, Welliver has achieved success and was once ranked as the #5 heavyweight in the world by the WBC, underscoring the importance of technique and skill over sheer size in the sport of boxing.

3 Antonio Johnson - 380 Lbs / 172.4 Kgs

He TKO'd Dustin Nichols Who Is The Heaviest Ever Boxer Recorded

Antonio Maurice Woods Johnson fought only 11 times between 2016 to 2019. He won 7 of them, of which five of them were by KO. Even though there is no information on his weight in his last fight in 2019, Johnson weighed a career-high of 379 lbs in his fight against Dustin Nichols

2 Eric "Butterbean" Esch - 426.5 lbs / 193.5 kgs

Despite His Weight, Esch Found Immense Success In The Ring

Lovingly known as "butterbean, Eric Esch was a heavyweight and super-heavyweight boxer who reached close to 400 pounds at his peak. Despite his substantial weight, he managed to secure significant success in the ring, with multiple world titles and earning a career record of 77 wins. Esch won two boxing world titles before facing former world champ Larry Holmes in his highest-profile fight.

1 Dustin Nichols - 450 Lbs / 204 Kgs

The Heaviest Ever Weigh-In For Nichols Vs Justin Jones In 2011

Also known as "The Worm", Nichols was known as a boxer who gained victories against opponents with no wins on their records, often avoiding fights that lasted the entire distance. Despite his notable fight against future world champion Deontay Wilder, where Nichols decided not to continue after the first round, his fluctuating weight, reaching a peak of 450 lbs/204.1 kg, and subsequent weight loss to nearly 320 lbs/145 kg did not shield him from consistent defeat in his spiralling boxing career.