10 Undefeated Boxing Streaks You Need To Know About

4. Floyd Mayweather Jr. - 49-0, 26 KOs (1996-Present)

As we stand here today with Mayweather coming off the back of the most lucrative win in boxing history against Manny Pacquiao last year, it looks as if Money only has one more run round the block left in him before he calls it a day. He's pencilled in a bout scheduled for September this year which could see him bow out of the game with 50 straight wins and an endless string of reputations ruined. Over the course of a staggering 20-year fighting career, Mayweather has fought 20 world champions and defeated every single one of them. When Floyd claims he is the greatest of all time there are very few people who can argue. As Kid Rock has said, it ain't bragging if you back it up.