Boxing is a fun sport, where you can work out your aggression, get in shape, and build up your strength. However, it’s also a dangerous sport. Among boxers who are alive today, there are 10 boxing champions you might be scared of.

These ten men have one thing in common: they are all undefeated. They’ve gone the distance (pun intended) and maintained their undefeated records while fighting against some of the best boxers of all time. So while these fighters might not be the most famous boxers of all time, they’re definitely some of the best. Read on to learn about these 10 boxing champions who might scare you!

Mike Tyson

Once known as “Baddest Man on the Planet,” Mike Tyson has been called the most feared man in the world. The former world champion has won five world championships and is known for his quick fists, fearless fighting style, and ability to make any opponent a punchline.

He is the only professional boxer in history to have been undefeated, with 50 wins and no losses. Mike fought against legendary fighters like Evander Holyfield, Michael Spinks, Michael Dokes, and Kevin McBride. Tyson has been arrested multiple times for assault.

Notorious gang members and individuals with violent pasts are often easy targets for Tyson’s aggressive fighting style.

George Foreman

George Foreman is an American professional boxer. He has been boxing professionally since 1974, and has a record of 75 wins and 4 losses. In a professional career that lasted 31 years, he won five world titles in five different weight classes: the WBA Heavyweight Championship, the WBC Heavyweight Championship, the IBF Heavyweight Championship, the WBA/WBC/IBF Welterweight Championships, and the IBF Middleweight Championship.

It’s obvious that Foreman’s age, over 46, will catch up to him one day. However, that day is not very close. George is fighting all over the world to this day, and has stated that he wants to fight Joe Louis one more time. He is reportedly still the heaviest fighter to ever hold the IBF Heavyweight Championship.

Joe Frazier

Joe Frazier might not be one of the most well-known boxers of all time, but he was one of the most feared, taking on Muhammad Ali in two of the greatest heavyweight bouts of all time. When Ali asked for a rematch in 1971, Frazier simply laughed. Even though he lost that match by decision, he went on to defeat Ali in a second bout and finished his career undefeated at 20-0.

Muhammad Ali

Muhammad Ali’s name is synonymous with excellence. He made boxing history with his famous “float like a butterfly, sting like a bee” quote and went on to win the heavyweight title seven times, which is a record no one in boxing can make. Ali, nicknamed “The Greatest” for his boxing skills, is regarded by many as the greatest boxer of all time. He died in 2016 from respiratory arrest at the age of 74.

Rosey Grier

Waking up in the morning, getting out of bed, throwing your pads on, heading out to play, getting the job done. Rosey Grier was a Philadelphia heavyweight boxer who fought against some of the best heavyweights of his time, including Joe Frazier. Grier won three consecutive World Boxing Association heavyweight championships in 1961, 1962, and 1963.

Manny Pacquiao

After a decade of not losing, Manny Pacquiao finally lost his first fight in nearly a decade when he lost to Jeff Horn via unanimous decision. However, as this fantastic photo proves, Pacquiao hasn’t lost much at all:

Pacquiao might have lost his last fight, but he’s still a legend of the sport and one of the best ever. With a record of 59-6-2, Pacquiao is the only boxer to win belts in eight weight classes, so we could see him fight for his title in two weight classes in the near future.

Pacquiao will be featured in a December 2017 match against former light-welterweight champion Lucas Matthysse. While this match won’t have a title on the line, it will be a battle for the perfect record.

Floyd Mayweather Jr.

Floyd Mayweather Jr. is an American professional boxer. He currently holds the record for the highest number of consecutive victories, beating Rocky Marciano’s 49-0 record. Floyd Mayweather Jr. is known for being one of the best boxers of all time. He’s been named as the best pound-for-pound boxer of his era, as well as being one of the greatest boxers of all time.

History: Mayweather rose to fame in the world of boxing when he won the WBC Lightweight title in 2005. He defended that title nine times and was then awarded the WBA Lightweight title in 2007. In 2008, Floyd Mayweather Jr. defeated Marco Antonio Barrera to add to his WBC Lightweight title.

Sugar Ray Leonard

Sugar Ray Leonard is one of the most famous boxers in the history of the sport. He captured the world title from the legendary Marvin Hagler. And he did it by competing in the best rivalry of all time: Sugar Ray vs. Marvin. It lasted 12 rounds and was one of the most competitive rivalries in boxing history.

He followed that up with a historic championship match against Thomas Hearns, which was another classic. Hearns was tough, and Leonard had to dig deep to pull out the victory.

Leonard went on to win another championship match against Roberto Duran, which cemented his status as the greatest boxer of all time. Leonard became an American hero and had two legendary fights against Muhammad Ali, which cemented his place as an iconic figure in boxing.

Lennox Lewis

Lennox Lewis is the heavyweight boxing champion of the world, having won the belt from Mike Tyson in June 1997. Lewis currently holds the record for most reigns at the time of his retirement from boxing. Lewis retired from boxing at the age of 40, before claiming that he could still fight today.

Looking for more of the scariest celebrities? See The Scariest Celebrities on the Planet.

He’s now 41 and is trying to make a comeback in MMA. In his first MMA fight, he beat Ron Moss.

At 1.86m, he’s a bit shorter than most boxers, but he’s made up for it by being one of the hardest hitters in the sport. He beat Mike Tyson on points in their rematch.

Floyd Patterson

Floyd Patterson is a three-time Olympic gold medalist and former world heavyweight boxing champion. He won his first amateur championship in 1958 and was known for the left hook and his explosive left hand. Patterson’s professional boxing career began in 1966, and he went on to win the heavyweight championship of the world in 1974.

According to The Guardian, Patterson was nicknamed “The Thunder From Down Under” because of his muscular build and “heavily-featured appearance.” Despite his size, Patterson was a quiet, introverted individual who only spoke when necessary. During his reign, he gave little if any media interviews and shunned the spotlight.

Conclusion

Each and every single one of these 10 boxers have fought against the best boxers of their time. While some of them were close their opponents are some of the best. So while you’re chilling on the couch, instead of streaming movies, you could easily be learning about some of the best boxers of all time.