![Brazil's Acelino Freitas, the World Boxing Lightweight champion, works out on a speed bag at his training camp in Fernwood, Pennslyvania, June 28. Freitas, from Salvador, Bahia and with an undefeated record Brazil's Acelino Freitas, the World Boxing Lightweight champion, works out on a speed bag at his training camp in Fernwood, Pennslyvania, June 28. Freitas, from Salvador, Bahia and with an undefeated record](https://c8.alamy.com/comp/2D493D3/brazils-acelino-freitas-the-world-boxing-lightweight-champion-works-out-on-a-speed-bag-at-his-training-camp-in-fernwood-pennslyvania-june-28-freitas-from-salvador-bahia-and-with-an-undefeated-record-of-35-0-0-will-defend-his-championship-against-us-boxer-diego-corrales-38-2-0-on-august-7-reutersteddy-blackburn-tbgn-2D493D3.jpg)
Brazil's Acelino Freitas, the World Boxing Lightweight champion, works out on a speed bag at his training camp in Fernwood, Pennslyvania, June 28. Freitas, from Salvador, Bahia and with an undefeated record
![Column: Floyd Mayweather, Rocky Marciano and why 48, 49 and 50-0 have little significance - mlive.com Column: Floyd Mayweather, Rocky Marciano and why 48, 49 and 50-0 have little significance - mlive.com](https://www.mlive.com/resizer/EKg3VRYluv3tSf4wiW-IHXBIbq0=/800x0/smart/advancelocal-adapter-image-uploads.s3.amazonaws.com/image.mlive.com/home/mlive-media/width2048/img/mayweather_impact/photo/mayweather-marcianojpg-cb48068c98f8347d.jpg)
Column: Floyd Mayweather, Rocky Marciano and why 48, 49 and 50-0 have little significance - mlive.com
VIDEO] With 49 wins, undefeated dwarf boxer Wanheng, one win from Mayweather record - Punch Newspapers
Rocky Marciano's record has been equalled but the love and awe he inspired will always leave him out of reach of others - Steve Bunce | The Independent | The Independent
![10 amazing boxers with the longest winning streaks, including Julio Cesar Chavez, Roberto Duran and Floyd Mayweather Jr 10 amazing boxers with the longest winning streaks, including Julio Cesar Chavez, Roberto Duran and Floyd Mayweather Jr](https://www.the-sun.com/wp-content/uploads/sites/6/2020/09/NINTCHDBPICT000000775547.jpg?strip=all&w=874)
10 amazing boxers with the longest winning streaks, including Julio Cesar Chavez, Roberto Duran and Floyd Mayweather Jr
![10 amazing boxers with the longest winning streaks, including Julio Cesar Chavez, Roberto Duran and Floyd Mayweather Jr 10 amazing boxers with the longest winning streaks, including Julio Cesar Chavez, Roberto Duran and Floyd Mayweather Jr](https://www.the-sun.com/wp-content/uploads/sites/6/2020/09/NINTCHDBPICT000001389406.jpg)
10 amazing boxers with the longest winning streaks, including Julio Cesar Chavez, Roberto Duran and Floyd Mayweather Jr
Aesthetics Personal Training - Aberdeen - 🥊 Rocky Marciano with the help of his personal trainer & limited use of equipment became boxing World Heavyweight Champion. His outstanding 49-0 record makes him
![Twitter 上的ESPN Ringside:"On this date in 1956, Rocky Marciano announced his retirement from boxing with a perfect 49-0 record. He remains the only heavyweight champ to finish his career undefeated. https://t.co/sIZYYDh7QQ" / Twitter 上的ESPN Ringside:"On this date in 1956, Rocky Marciano announced his retirement from boxing with a perfect 49-0 record. He remains the only heavyweight champ to finish his career undefeated. https://t.co/sIZYYDh7QQ" /](https://pbs.twimg.com/media/EWn5IkKXYAkLaDO.jpg)
Twitter 上的ESPN Ringside:"On this date in 1956, Rocky Marciano announced his retirement from boxing with a perfect 49-0 record. He remains the only heavyweight champ to finish his career undefeated. https://t.co/sIZYYDh7QQ" /
![MMA History Today en Twitter: "Apr27.1956 Legendary Boxer Rocky Marciano Announces his Retirement from Boxing He retired with a Record of 49-0 http://t.co/uV2jssrbs6" / Twitter MMA History Today en Twitter: "Apr27.1956 Legendary Boxer Rocky Marciano Announces his Retirement from Boxing He retired with a Record of 49-0 http://t.co/uV2jssrbs6" / Twitter](https://pbs.twimg.com/media/BmQxckYCIAAS5w-.jpg)