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Marciano 49-0, Mayweather 50-0 among excellent boxing careers

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Rocky Marciano undefeated heavyweight champion portrait

Boxing has produced many champions with long winning streaks, but very few retire undefeated. Two of the most celebrated undefeated careers in the sport belong to Rocky Marciano and Floyd Mayweather Jr., whose perfect records still serve as a benchmark every time another fighter begins to approach the finish line undefeated.

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Marciano retired in September 1955 with a record of 49-0 (43 KOs) after defeating Archie Moore to retain the heavyweight title. His mark became one of boxing’s most celebrated records and became the standard for an undefeated career at the highest level for decades.

Mayweather later surpassed that total, finishing his professional career with a record of 50-0 (27 KOs) after a victory over Conor McGregor in August 2017. Two years earlier, Mayweather had already scored one of the most lucrative victories in the sport, defeating Manny Pacquiao by unanimous decision in May 2015.

Several other champions came close to breaking these perfect records before suffering their first defeat at the end of their careers. Heavyweight champion Larry Holmes began his title defense in September 1985 with a 48-0 record before losing a decision to former lithe heavyweight champion and 1976 Olympic gold medalist Michael Spinks.

Brazilian legend Éder Jofre also had a long unbeaten streak before his first defeat. Jofre entered the 1965 bantamweight title fight with a record of 47-0-3 before losing a split decision to the Japanese organization Fighting Harada.

The remaining champions managed to end their careers undefeated. Welsh great Joe Calzaghe retired in November 2008 with a record of 46-0 (32 KOs) following victories over Roy Jones Jr. and Bernard Hopkins in the final stage of his career. Earlier in his championship career, Calzaghe also defeated Denmark’s Mikkel Kessler in a super middleweight unification fight.

There have been long periods of undefeated fighters in the history of boxing. According to The Ultimate Encyclopedia of Boxing by historian Harry Mullan, notable longer undefeated streaks include Packey McFarland (97 fights), Fred Dyer (94 fights), Pedro Carrasco (93 fights), Sugar Ray Robinson (91 fights) and Julio César Chávez Sr. (90 fights).

Marciano’s 49-0 and Mayweather’s 50-0 remain the most recognizable perfect records in boxing history. In a sport where even great champions often suffer defeats over the course of long careers, retiring undefeated remains one of the rarest of achievements.

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Categories Floyd Mayweather Jr. and Rocky Marciano

Last updated: 14/03/2026 at 15:08

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Dave Allen weighed at his lightest in seven years, causing ‘biggest brawl in British boxing history’ in match against Hrgovic

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Dave Allen weighs lightest in 7 years to produce ‘biggest upset in British boxing history’ against Hrgovic

Dave Allen kept his word and will enter the fight with Filip Hrgovic in decent shape.

The fan-favorite Briton has been emotional throughout his career, often revealing after defeats that he could have trained harder and prepared better.

This weekend he will be looking to claim the biggest scalp of his campaign in Hrgovica world-class, well-trained and sturdy Croatian, whose only defeat was against the up-to-date world champion Daniel Dubois.

Although he still considers the main event at London’s O2 Arena against Lucas Browne to be the biggest achievement of his career, Allen will be fighting in front of 10,000 fans at the Keepmoat Stadium in Doncaster, and the importance of this event has not crossed his mind.

He clearly has a tough trainer, tipping the scales at 248.8 pounds. This is an impressive drop compared to the 271 he weighed in his last appearance – in February he defeated Karim Berredjem in the first round. In fact, this is the lowest weight Allen has registered since his 2019 loss to David Price.

Speaking about the transformation, “Dazzling” Dave said:

“I’ve just eaten less chocolate, less sweets… People talk about sacrifices but I’m actually very elated. I spend a lot of time with my family, my children and boxing for a living. Everyone here doing a 9-5, it’s a sacrifice. It wouldn’t be fair to talk about sacrifice, I live my dreams every day. Sometimes it’s difficult in the gym, sometimes I feel like eating something, but I’ll go out in front of 10,000 people in Doncaster against one of the best heavyweights in the world. world. It was my dream and I will make it come true soon.

Regardless of his shape, most consider Hrgović too gigantic a mountain for Allen to climb. He is aware of this but believes it could cause one of the worst disturbances ever seen on British shores.

“He’s a great fighter, but I’m not afraid of him. He’s been trying to tell me all week that I don’t want to look at him. I don’t care about Filip Hrgovic. It’s a boxing match.

“On paper I shouldn’t even be in the ring with him, but I feel tomorrow at Donny’s will be a special night where I’ll experience one of the biggest upsets in British boxing history.”

If Allen fails to disrupt the odds and Hrgovic emerges unscathed, he is widely expected to face Moses Itauma in August.

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David Morrell says a career doesn’t end after a KO defeat

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Image: David Morrell Says Career Isn’t Over After Zak Chelli Knockout

David Morrell says his career isn’t over after his knockout loss to Zak Chelli last Saturday in England, but questions are already being raised about whether Morrell should return to 168 pounds after another tough run at lithe heavyweight.

Morrell was stopped in the 10th and final round after a competitive bout on the Fabio Wardley vs. Daniel Dubois heavyweight undercard. The defeat was Morrell’s second defeat in his last three fights following a decision loss to David Benavidez in February 2025.


“This doesn’t mean David Morrell’s career is over,” Morrell said on the I shownstagram. We must take this as a lesson and move on with greater strength.

“We’ll be back soon and we’ll have more news for you.”

Morrell also assured fans that he was recovering quickly from the knockout.

“For those who are worried: thank God, I am well and robust.

“A person is not measured by the number of times he falls, but by the number of times he gets up.

“This is the beginning of a fresh stage, not the end of the race.”

The loss to Chelli increased criticism of Morrell’s move to 175 pounds. Since moving up from super middleweight in August 2024, Morrell entered 2025 undefeated, but has now lost two of his last three fights since moving up to lithe heavyweight.

Morrell dropped a split decision victory over previously undefeated Imam Khataev last July before losing to David Benavidez and being stopped by Zak Chelli.

Boxing analyst Chris Mannix was among those who suggested Morrell may need to rebuild at super middleweight after the defeat.

The 28-year-old Cuban currently has a record of 12-2 with nine knockouts, having entered 2025 undefeated and viewed as one of the most perilous newborn fighters in boxing.

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Last update: 2026/05/14 at 23:49

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Coach Terence Crawford BoMac admits that one of the players “had his number”: “We had to take it away”

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Terence Crawford trainer BoMac admits one fighter ‘had his number’: “We had to pick it up”

Terence Crawford has faced select top-class players throughout his career, but there was one player who coach Brian “BoMac” McIntyre deemed a real threat to his protégé’s dominance.

As the undisputed champion of three divisions, it’s safe and sound to say that “Bud” never shied away from a formidable challenge, even if it meant putting himself at a significant disadvantage.

His fight with Canelo Alvarez, for example, saw the extraordinary technician move up two weight classes and dethroned the Mexican with a remarkable unanimous decision victory last September.

Similarly, many felt that Crawford was clearly the underdog before us his fight with Errol Spence Jr. in 2023only to score a ruthless ninth-round finish and unify all four major welterweight titles.

But according to longtime head coach “BoMac,” Crawford came closest to his only professional loss in 2019, six years before he retired from the sport.

The American was then defending his WBO welterweight title against Egidijus Kavaliauskas, also known as “Mean Machine”, who was not only undefeated, but also boasted an impressive knockout to victory ratio.

I’m talking to Podcast on the front pageMcIntyre credited Kavaliauskas with forcing Crawford to change his tactics after the third round, when “Bud” jumped out of the ring after being deemed a no-knockdown.

“That motherfucker just kept coming and coming. He didn’t stop. For the first few rounds, he only had Bud’s number because he was punching before Bud and punching after Bud.

“It was like, ‘Damn, dog – you [Crawford] I have to pick it up.”

Ultimately, Crawford managed to secure a ninth-round victory over Kavaliauskas, but he had to dig deep into his tool bag to win. The record-breaking star later said that “Mean Machine” was one of the hardest hits he had ever faced.

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