5. Arthur Ashe
Considered one of the greatest tennis players over the last 50 years, Arthur Ashe won three Grand Slam singles titles and two more doubles titles throughout his incredible 21-year career.
Turning pro in 1959, Ashe became the only black man ever to win the singles title at Wimbledon, the Australian Open or the United States Open. With 818 wins, he was inducted into the International Tennis Hall of Fame in 1985 after his 1980 retirement.
In the early 1980s, Ashe underwent a heart bypass surgery during which he contracted the HIV virus through a blood transfusion.
Hiding his diagnosis for years, Ashe finally announced his illness in 1992 after becoming extremely ill. With the world in his corner, Ashe worked closely with AIDS awareness groups and started the Arthur Ashe Foundation for the Defeat of AIDS. On February 6, 1993, Ashe passed away from pneumonia that was caused by AIDS. Just four months later, he was posthumously awarded the Presidential Medal of Freedom by President Bill Clinton.