| MARCIANO | The only heavyweight champion in boxing history to retire having won every fight in his professional |
| TERRIBLE | Bad to retire, having worked round British Library (8) |
| THOMASHEARNS | Boxer nicknamed "Hitman" who was the first ever quadruple world champion in boxing history |
| JOEFRAZIER | In 1971, ____ became the first boxer to defeat Muhammad Ali in his professional career |
| THEROCK | Ring name used by the actor Dwayne Johnson in his professional wrestling career (3,4) |
| THRILLAINMANILA | One of the biggest fights in boxing history |
| ICHIRO | 2025 Baseball Hall of Fame inductee with 4,367 hits in his professional career |
| UNDEFEATED | Having won every contest (10) |
| UNBEATEN | Having won every game |
| MIKETYSON | American former boxer who became the youngest heavyweight champion in history in 1986 at the age of 20 years and 4 months: 2 wds. |
| PHILJAGIELKA | Former England defender who captained Stoke City to a 4-0 win at Coventry City as he made the 800th appearance of his professional career in March 2023 |
| SONNYLISTON | US boxer who became world heavyweight champion in 1962, losing the title to Cassius Clay in 1964 (5,6) |
| SONNY | Learning to box in prison. who went on to become world heavyweight champion in 1962? (5,6) |
| LISTON | Learning to box in prison. who went on to become world heavyweight champion in 1962? (5,6) |
| HOCKEY | India and Pakistan won every Olympic tournament from 1928 to 1968 in which sport? (6) |
| SNOOKER | Joe Davis won every world championship from 1927 to 1946 in which sport? (7) |
| TEDDY | ___ Sheringham, retired striker who started his professional career at Millwall in 1983 (5) |
| ELON | "jake paul should make boxing history by fighting ___ musk next" (@dieworkwear tweet) |
| SWEPT | Won every game in the World Series, say |
| PUTOUTTOPASTURE | Retire, having found one way to get rota set up |
