11. Floyd Mayweather vs. Conor McGregor (2017)
Mayweather was one of the best defensive boxers ever and maybe the best. He fought some of the world’s top fighters including Manny Pacquaio, Oscar De La Hoya, and Juan Manuel Marquez. ‘Money’ was also a very canny businessman because he handpicked opponents when they were vulnerable. He is the only man with an official win over Canelo Alvarez even though he fought the Mexican before he fully matured.

However, Mayweather was superb at avoiding damage. This increased his longevity. He broke many records throughout his career. This included one that Rocky Marciano held for a long time. Marciano retired in 1950 with a legendary 49-0 record. However, Mayweather went one further when he defeated Conor McGregor (via CBS Sports). His TKO victory took him to 50-0 and sealed a place in history.