| GRIGORDIMITROV | The only male Bulgarian tennis player to have been ranked in the ATP singles top ten |
| ALCARAZ | Carlos, Spanish tennis player who in 2022 became the youngest man ever to top the ATP singles rankings (7) |
| DIMITROV | Grigor, Bulgarian tennis player who defeated Andy Murray at the 2023 U.S. Open (8) |
| ASSESS | Blockheads single's top review (6) |
| EDDIECHARLTON | Which Australian professional billiards player is the only player to have been world championship ru |
| KEEGAN | Who is the only British player to have been voted European Footballer of the Year twice? (6) |
| CARLOS | Who is the youngest man and first male teenager in the Open Era to attain the World No. 1 spot in the ATP rankings? (6) |
| MA | ___ Lin is the only male table tennis player to win Olympic gold in singles, doubles and team |
| FREDSTOLLE | The only male tennis player in history to lose his first five Grand Slam singles finals |
| STOLLE | Fred ___, the only male player in history to have lost his first five Grand Slam singles finals |
| STEFFIGRAF | The only tennis player to have won each of the four Grand Slam singles titles at least four times |
| GRAF | Who is the only tennis player to have won all four majors and Olympic gold in the same year? (4-) |
| LLEYTONHEWITT | Youngest male tennis player to be No. 1 in the ATP Rankings |
| ADRIAN | Male name of Greek and Roman origin, ranked in the top 1000 boys" names in the US since 1900 (6) |
| RODLAVER | Only tennis player to have won two calendar-year singles Grand Slams in 1962 and 1969 (3,5) |
| GREG | Who is the only male athlete to win diving gold medals in successive Olympics - in Los Angeles 1984 and in Seoul 1988? (4) |
| GRANDSLAM | Rod Laver is the only tennis player to have twice won this title (5,4) |
| ANDYMURRAY | Only tennis player to have won two Olympic singles titles |
| IGASWIATEK | Polish tennis player who has been ranked #1 in the world since April 2022: 2 wds. |
| VENUS | First name of the First African American woman to be ranked No. 1 in tennis in the Open Era. (5) |
