What is boxer who retired undefeated in 2007?

One famous boxer who retired undefeated in 2007 was American fighter Floyd Mayweather Jr. Mayweather finished his career with a perfect record of 50 wins, 0 losses, and 0 draws. He held multiple world titles in various weight classes and is considered one of the greatest boxers of all time.

Mayweather's defensive skills, speed, and intelligence in the ring made him nearly unbeatable throughout his career. He defeated many top opponents, including Oscar De La Hoya, Manny Pacquiao, and Canelo Alvarez.

After retiring in 2007, Mayweather made a brief comeback in 2009 before retiring again in 2015. He then came out of retirement once more in 2017 for a highly publicized bout against UFC star Conor McGregor.

Overall, Floyd Mayweather's undefeated record and dominant performances have solidified his legacy as one of the greatest boxers in the history of the sport.