Very few boxers in the world who retains the undefeated streak. Here you will see some of the boxers who never suffer defeat in their careers. The list is lead by Floyed Mayweather Jr who is retired last year but making a comeback again in 2017 against Conor McGregor in September. Ricardo Lopez the Mexican fighter also made name among the unbeaten boxers of the world.
| Boxers | Fights | Win | Draw | KO’s | Career |
| Floyed Mayweather Jr | 49 | 49 | 0 | 26 | 1996-2017 |
| Ricardo Lopez | 52 | 51 | 1 | 38 | 1985-2001 |
| Rocky Marciano | 49 | 49 | 0 | 43 | 1947-1955 |
| Edwin Valero | 27 | 27 | 0 | 27 | 2002-2010 |
| Terry Marsh | 27 | 26 | 1 | 10 | 1981-1987 |
| Harry Simon | 30 | 30 | 0 | 22 | 1994-2016 |
| Jimmy Barry | 70 | 59 | 9 | 39 | 1894-1899 |
| Joe Calzaghe | 46 | 46 | 0 | 32 | 1993-2008 |
Floyed Mayweather Jr (49 Wins – 26 KO’s) :
Mayweather is one of the top boxers in the world. He shown some of the great performances in the ring and he made debut in 1996 and retired in 2016. But few months ago he takes retirement back and making a comeback against McGregor.
Ricardo Lopez (51 Wins – 38 KO’s) :
Ricardo Lopez made his name among the list of unbeaten boxers in the world. In 1985 he made debut against Rogelio Hernandez. In 2001, he faced his last opponent (Zolani Petelo) and retained the IBF Light Flyweight title.