| VENUSWILLIAMS | First Black woman ranked No. 1 singles player in the Open Era |
| PHONO | Singles player in the 1950s |
| VENUS | First name of the First African American woman to be ranked No. 1 in tennis in the Open Era. (5) |
| REDWANSKA | Agnieszka ---, in 2012, became the first Polish tennis player in the Open Era to reach a Grand Slam singles final (9) |
| ALCARAZ | Who is the youngest man and first male teenager in the Open Era to attain the World No. 1 spot in the ATP rankings? (7) |
| 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) |
| JOHNLLOYD | The first British male tennis player in the Open era to reach a Grand Slam singles final |
| MARGARETCOURT | Australian tennis player who was the first woman to win the Grand Slam in the Open Era: 2 wds. |
| SERENAWILLIAMS | Winner of the most Grand Slam singles titles in the Open Era |
| RAV | Grand Slam singles titles, second-most in the Open Era |
| GRAF | Winner of 22 Grand Slam singles titles, second-most in the Open Era |
| HINGIS | Martina ..... is the youngest female winner of a Grand Slam title in the Open Era. (6) |
| ANA | ... Ivanovic, female Serbian tennis player ranked No. 1 in the world in 2008 (3) |
| MASSACHUSETTS | First of the five UK No. 1 singles by the Bee Gees, released in 1967 (13) |
| SANIA | ___ Mirza, retired Indian tennis star who was ranked No. 1 in the world in doubles |
| ARYNASABALENKA | Belarussian tennis player currently ranked No 1 in women's singles |
| RODLAVER | Australian male tennis player who won the first calendar year Grand Slam of the Open Era in 1969 (3,5) |
| ASHLEIGH | Tennis star Barty, recently ranked No. 1 in women's singles |
| EMERSON | Roy, Australian tennis player ranked No. 1 in 1964 (7) |
| NINE | The number of UK No. 1 singles achieved by the Spice Girls (4) |
