| MONICASELES | In 1990 she was the youngest ever winner of the French Open (6,5) |
| CINDY | She was "the youngest one in curls" |
| SHAFALI | At 15, she was the youngest to play a T20 international for India. (7) |
| COLINMCRAE | Driver who in 1995 became (and remains) the youngest ever winner of the World Rally Championship |
| THIRTYSEVEN | How old was the youngest ever First Minister of Scotland when elected (6,5) |
| ERNIEELS | Golfer who became the youngest-ever winner of the South African Amateur Championship at age 17 |
| BECKER | Boris _, the youngest-ever winner of the Wimbledon men's singles title (6) |
| LOTTOEDOD | Youngest ever winner of the Wimbledon Ladies' Singles title (6,3) |
| CAMPBELL | Surname of Tim who was the first ever winner of The Apprentice and who joined the show as an adviser in 2022 (8) |
| SANDYKOUFAX | Dodgers pitcher who was the youngest player elected to the Hall of Fame |
| ONEAL | Actress Tatum who's the youngest ever winner in a competitive Oscar category |
| MARTINAHINGIS | Swiss tennis player who was the youngest ever Grand Slam champion and youngest ever world number one |
| BARRYGARDINER | Labour MP for Brent North since 1997 who was the youngest ever mayor of Cambridge in 1992 (5,8) |
| AMOS | Singer Tori, who was the youngest-ever admission to the Peabody Institute conservatory (age five!) |
| EMMA | .... George, first-ever winner of the women's pole vault at the Commonwealth Games (4) |
| LUKELITTLER | The youngest ever PDC World Darts Champion (4,7) |
| TYSON | Who was the youngest ever World Heavyweight Boxing Champion? (5) |
| TANDY | Jessica ___, oldest-ever winner of the Academy Award for best actress |
| BORG | Six-time winner of the French Open |
| EVERT | Seven-time winner of the French Open |
