Althea Gibson was a pioneering American tennis player who broke the color barrier, becoming the first African American to win a Grand Slam title.
Don Budge was a trailblazing American tennis player who dominated the sport in the 1930s, becoming the first person to win a Calendar Year Grand Slam.
Maureen Connolly was a trailblazing American tennis player who became the first woman to win all four Grand Slam titles in a calendar year.