Not every boxer can rule a division in the same way Muhammad Ali, Joe Louis, Mike Tyson or Lennox Lewis did – but the following really did fail in the ‘champion’ part when it came to wearing the heavyweight crown.

Boxing’s alphabet title lunacy gives talkSPORT.com some choice candidates when picking the top ten worst heavyweights of all time, but some rules must be imposed first.

Tyson dominated every heavyweight he had faced en route to becoming the youngest heavyweight champion ever in 1986

Nobody took the WBO heavyweight belt seriously until Wladimir Klitschko gave it some legitimacy in the mid-2000s (thank you, Wlad).

So talkSPORT is not even considering early WBO champs from Francesco Damiani to Michael Bentt, and Siarhei Liakhovich to Sultan Ibragimov. Plus the WBA ‘regular’ title can get in the bin forever.

However, these men all had some claim to a genuine heavyweight world title at one stage in their careers – and the world was frankly a poorer place for it.

10. Gerrie Coetzee | WBA champion

Nicknamed ‘The Bionic Hand’, which sounds great and like he’s boxing’s own Winter Soldier until you realise it’s just because he had lots of surgery on his injured hand. Oh.

South African Coetzee’s best year was 1983 when he took on two talented but troubled heavyweights, drawing with Pinklon Thomas and then upsetting Michael Dokes to claim WBA gold (his third attempt at the belt).

He lost in his first defence and was knocked out by Frank Bruno in 1986.

9. Greg Page | WBA champion

The biggest moment of Page’s career came in a public sparring session when he knocked down Mike Tyson, signalling that all was not well with ‘Iron Mike’ before his shock first pro defeat (see below).

Sadly Page was part of the gifted ‘Lost Generation’ of US heavies in the 1980s beset by personal demons.

He picked up an alphabet strap in 1984 but was beaten in his first defence to the similarly out-of-shape Tony Tubbs. Retired with 17 defeats in 2001.

8. Leon Spinks | WBA, WBC and Ring champion

In 1978, at age 36, Ali won his belts back from Spinks to become a three-time champion

‘Neon Leon’ pulled off an almighty upset when the 7-0-1 novice outpointed an ageing Muhammad Ali in 1978, which makes him a real, lineal world champ.

But Spinks, who died in 2021, struggled with drink and drugs throughout his career and, after losing the rematch to a 36-year-old Ali, Spinks suffered 16 more defeats before then having a brief career as a pro wrestler.

Forever in the shadow of Ali and his more dedicated brother, Michael – who lost once in his 32-fight career to Mike Tyson – but at least Leon had one iconic win.

7. John Tate | WBA champion

‘Big John’ seemed to have potential as vast as his broad shoulders when the 1976 Olympic bronze medallist and undefeated pro captured the WBA belt in 1979.

However, he suffered two back-to-back knockouts in his next two fights – the first a brutal 15th-round KO at the fists of Mike Weaver that left Tate face-first unconscious on the canvas.

The American was never in world title contention again and sadly died in a car accident at the age of only 43 in 1998.

6. Primo Carnera | NBA champion (later known as WBA)

Not many old-time champions here because at least they were the genuine, linear No. 1s, unlike the fractured titles of today. However, Italian Carnera is a special case as the giant ‘Ambling Alp’ took part in several contests that were, frankly, fixed.

Carnera was a victim in all this, exploited by his handlers and beaten when he came up against top boxers like Max Baer and Joe Louis.

He later became a box office draw as a pro wrestler, which he much preferred to boxing and is in the WWE Hall of Fame. He died in 1967 at the age of 60.

5. James ‘Buster’ Douglas | WBA, WBC, IBF champion

Douglas was a 42/1 outsider to beat Tyson and shocked the world when he did, but his reign as champion was shortlivedRex Features

Like Leon Spinks, Douglas has one terrific signature win: in Buster’s case, the greatest upset in boxing history when he climbed off the canvas to end Tyson’s reign in 1990 having been a 42/1 underdog.

Douglas showed his skills in that fight, controlling a rusty ‘Iron Mike’ with a ramrod jab. But the rest of his career was a bust.

While Tyson didn’t take his training for the Tokyo bout seriously, Douglas decided to train for his first defence against Evander Holyfield by drinking Long Island iced tea cocktails and was polished off inside three rounds. A true one-fight wonder.

4. Frank Bruno | WBC champion

Bruno beat McCall to claim the title in 1995Getty Images – Getty

It truly hurts us to put Britain’s brave, beloved Big Frank here. But still. While many of his US rivals had all the skills but no discipline, Bruno was a bit more the other way around.

He was in tremendous shape and a big puncher but lost against every good heavyweight he faced until he finally won the WBC belt in 1995, defeating the erratic Oliver McCall in a fight that is a good cure for insomnia.

Bruno gave his all in the ring, however, he is well worth the hero worship. Forgive us, Frank.

3. Bermane Stiverne | WBC champion

Wilder knocked out Stiverne, who hadn’t fought in two years, in the first round of their rematchGetty

Stiverne’s claim to fame is that he took demolitions expert Deontay Wilder the full 12-round distance for the first time in 2015, albeit losing a points decision and his WBC belt along the way.

Before that, Stiverne had picked up the vacant title by beating a past his best Chris Arreola – and in 2017 he’d undo his solid work against Wilder by turning up out of shape for the rematch and getting blasted out in the first round.

A pretty dire reign by any stretch.

2. Bruce Seldon | WBA champion

Plenty of forgettable heavyweights held alphabet titles in the 1980s but at least most of them tried when they got in the ring.

Seldon had already lost to Oliver McCall, Riddick Bowe and Tony Tubbs when he found himself with the WBA belt after beating a faded Tony Tucker in 1995.

A $5million payday for fighting a post-prison Tyson loomed and Seldon was not one to hold up the party, flopping to the canvas in the first round from some punches that seemed oddly off target.

Maybe the wind from them was just really strong.

1. Charles Martin | IBF champion

It took AJ five minutes to see off the American and become a world champion for the first timeAFP

Charles ‘I walk the earth like a god’ Martin’s 85-day reign as heavyweight champion is the second shortest ever, but almost certainly the worst.

Even his winning the vacant IBF title was highly fortunate as Vyacheslav Glazkov – the pre-fight favourite – twisted his knee in round three and could not continue.

Eddie Hearn smelled an opportunity and offered Martin millions to defend his title against rising star Anthony Joshua, although there was little defence on show as Martin was bashed out in two rounds, barely landing a punch of his own. Woeful.

Joshua, meanwhile, took over the division until losing his belts to Andy Ruiz in another shock loss before regaining them and then subsequently relinquishing them again – this time, to Oleksandr Usyk.