| PETERLEKO | Hungarian chess player who became the world's youngest grandmaster in 1994 |
| GATES | Harvard dropout who founded Microsoft and became the world's youngest billionaire in 1987 (5) |
| KASPAROV | Gary, chess player who became world champion in 1985 (8) |
| FABIANO | Chess's ___ Caruana, onetime youngest grandmaster in U.S. history (14 years, 11 months) |
| POLGAR | Judit, Hungarian chess grandmaster (6) |
| RETI | Hungarian chess master Richard |
| JUDITPOLGAR | Hungarian chess great |
| LOMU | Late New Zealand rugby player who became the youngest Test player for the All Blacks when he debuted with the team in 1994 aged 19 (4) |
| MICHAELCHANG | American tennis player who became the youngest male player to win a Grand Slam singles title when he won the French Open in 1989 |
| POGBA | Paul ___, France footballer who became the world's most expensive player in August 2016 (5) |
| SELES | Monica ___, tennis player who became the youngest-ever French Open champion at the age of 16 in 1990 |
| JONAH | Former New Zealand rugby union player who became the youngest-ever All Black in 1994 (5,4) |
| TJEN | Identify the surname of this player who became the first from Indonesia after 21 years to play in the U.S. Open main draw this year. (4) |
| MARK | Identify the first name of this player who became the first player to score 50+ runs in T20IS for two different countries. (4) |
| HENDRY | Stephen ---, snooker player who became the youngest-ever World Champion in 1990 (6) |
| WONDERBOY | ____: How Magnus Carlsen Became the Youngest Chess Grandmaster in the World - 2007 book title |
| NEYMAR | Brazilian footballer who became the world's most expensive player when he joined Paris Saint-Germain from Barcelona in 2017 |
| MAYER | Kevin, French decathlete who became the world record holder in 2018 (5) |
| CARLOSALCARAZ | 19-year-old Spanish tennis player who became the youngest ever men's year-end world No. 1 in November 2022 (6,7) |
| LLEYTONHEWITT | Australian tennis player who became the youngest man to be ranked #1 at 20 in 2001: 2 wds. |
