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Throughout the month of February, Tennis Channel and TENNIS.com will be celebrating Black History Month. Keep watching and reading to learn more about some of the most important African-Americans to have made their marks on the game.

Not only is Serena Williams the greatest female tennis player of all time—she might be the greatest player of all time, period. Williams has won 23 Grand Slam titles, the most for any woman in the Open Era. It's three more than the major-title haul of Roger Federer, the record holder on the men's side.