Top 10 Worst Boxing Heavyweight World Champions

The heavyweight championship of the world, even now in its fractured state, is widely considered to be the top prize in professional boxing. We’ve seen some extraordinary heavyweight champs over the years – superstars such as Muhammad Ali, George Foreman and Mike Tyson all spring to mind. 

Today, however, we won’t be looking at the cream of the crop – no, instead, we’ll be rooting around at the very bottom of the boxing barrel. 

In this list, we’ll rank the ten worst world heavyweight champions of all time. To qualify, a boxer must have held a legitimate version of the title – as such, boxers who held titles such as the WBU belt or the WBA regular belt will not be included. 

10. Marvin Hart

Marvin Hart takes the tenth spot on the list, almost as a formality. He won the vacant world title in 1905 in a fight with Jack Root, but was defeated in his inaugural defence of the belt by Tommy Burns.

As such, Hart remains a footnote in the annals of heavyweight history. Burns was a good fighter, one of the best in his day, but many were still disappointed by Hart’s performance in the bout. 

Notably, before winning the title, Hart defeated Jack Johnson – the man who would eventually go on to snatch the belt from Burns. 

9. Nikolai Valuev

Nikolai Valuev is often looked upon as a figure of ridicule in professional boxing. A big, lumbering Russian with limited technical ability, Valuev nonetheless won a world title on two separate occasions. 

Both times, he won the world title against John Ruiz (we’ll get to him). The first fight was controversial – Valuev was booed upon the decision’s announcement. The second was little better, though the Russian was able to use his jab to better effect in the rematch. 

His first title loss came against Ruslan Chagaev, who danced circles around his comparatively immobile foe. Chagaev won a majority decision, though this flattered Valuev somewhat. 

In 2009, he would lose his sophomore world title to David Haye, as the Brit used his superior speed to land well-timed shots throughout the contest. He wobbled Valuev late on – while the ‘Beast from the East’ hung on, it was clear that his time at the top was over. 

8. John Ruiz

John Ruiz certainly isn’t the worst heavyweight world champion ever, but he might be the most boring. If you have sat through each (or any) of Ruiz’s title fights, please, we implore you, do something nice for yourself tonight. 

Ruiz’s pair of reigns were both sullied by a lack of action and questionable judges’ decisions. His first reign initially saw him pick up a controversial win and an even more controversial draw over an aging Evander Holyfield. This was followed by a strange DQ win over Kirk Johnson, before he was taken to school by natural middleweight Roy Jones Jr and lost his belt. 

When Jones vacated the title to move back down to light heavyweight, Ruiz was awarded his title back by the WBA. His second reign began with a win over fringe contender Fres Oquendo, a razor-thin decision victory against Andrew Golota and a no-contest against James Toney after Toney failed a drugs test. Ultimately, he would lose the title in a stinker against Nikolai Valuev – by this point, fans were more than glad to see the back of ‘The Quiet Man’ (though he would have several unsuccessful world title challenges after this). 

7. Leon Spinks

It feels strange to put a man, Leon Spinks, who defeated Muhammad Ali and won an Olympic gold medal on a list such as this.

Sadly, Spinks never met the expectations of the general public. He would lose his title back to Ali in the rematch, going on to lead a meagre legacy in the years that followed. Furthermore, he was never a natural heavyweight – Spinks was a cruiserweight, though he fared little better when he moved down. .  

‘Neon’ Leon would only challenge for the heavyweight gold once more after this, where he was stopped in just three rounds by Larry Holmes. 

6. Jess Willard

One may expect that Jess Willard, a man who defeated the great Jack Johnson to win the world title, would have missed out on a list such as this. However, we have to scrutinise his dismal run as champion.

While he was relatively active during his time as champion (though not by the standards of the time), he only defended his belt once in four years. 

The second defence of his title came against Jack Dempsey, who thoroughly brutalised the much taller man. Willard was completely overwhelmed and destroyed by the ‘Manassa Mauler’, losing his title in the most devastating of fashions. 

5. Andy Ruiz Jr.

The world was overjoyed for Andy Ruiz when he beat the odds and stopped Anthony Joshua back in 2019. However, one of the biggest feel-good sporting stories of the year would soon turn into something resembling a Darren Aronofsky film (we’ll let you decide which one). 

Ruiz turned up for the rematch against AJ looking considerably overweight – he had enjoyed all the perks of being champion, but had not completed the work that comes with it. Joshua outworked and outboxed the champion over 12 rounds, snatching the belt away from Ruiz and putting his brief reign to a sorry end. 

Ruiz could have been an inspiration to worldwide audiences and to his own people – he was the first Mexican world heavyweight champion and captivated many upon his coronation. Nevertheless, this is not the life Ruiz chose for himself – and it’s a shame. 

4. Bruce Seldon

Bruce Seldon is perhaps the most forgettable name on this list. He won his world title in a bout against an aging Tony Tucker – and it wasn’t even the main event of the evening.

He picked up a win over Joe Hipp in his only title defence, battering the Native American with his jab. However, everything would fall apart when he took on his next challenger – Mike Tyson.

Like many of Tyson’s opponents, Seldon was a beaten man long before he got to the ring. ‘Iron’ Mike knocked him down twice en route to a first round victory, which was so one-sided it had the crowd chanting ‘fix’.

3. Michael Bentt

Michael Bentt put forth a miserable effort in his sole world title defence against Herbie Hide. He failed to land anything of note throughout the contest – from round 3 onwards, it was clearly visible that he had begun to lose interest. 

Not only was he out of shape, his mental preparedness was shockingly nonexistent. Bentt eventually succumbed to a knockout in the seventh round after putting forth little resistance to Hide’s disciplined onslaught. 

The only factor keeping Bentt from a higher placing on this list is the method in which he won the world title. He shocked the world when he knocked out an overconfident Tommy Morrison, stopping ‘The Duke’ after catching him with a massive shot while Morrison was in the middle of throwing an overlong combination. 

2. Bermane Stiverne

Bermane Stiverne never looked like a likely world title holder. He beat Chris Arreola to secure the gold – a middling contender at best – and failed to hold the belt for very long. 

He lost the title in his first defence against Deontay Wilder. It was an uncharacteristic display from the Bronze Bomber – he remained calm, outworking the champion rather than lunging in for a big knockout. Eventually, Wilder was handed a wide unanimous decision and Stiverne lost his title. 

His effort in the rematch is what really lands Stiverne a spot on this list. While he wasn’t champion at the time, it was so laughable that it simply requires a mention. In just one round, Stiverne failed to throw anything of note as Wilder blasted him out of there with absolute ease. 

1. Charles Martin

No one else could have occupied the top spot on this list other than ‘Prince’ Charles Martin. He covers all the bases – not only did he win the world title in the most unceremonious of ways, he also let it go without even a whimper. 

Martin claimed his sole world title in a match against Vyacheslav Glazkov. Glazkov was expected by many to win, but suffered a career-ending knee injury during the bout – making Martin the unlikely champion. 

He did not accept his prize with humility – instead claiming in later interviews that he ‘walks this Earth like a god’. Naturally, everything unravelled upon his first title defence. Martin was roundly hammered by Anthony Joshua, who knocked him out in just two rounds.