Serena Jameka Williams (born September 26, 1981) is a professional American tennis player. The Women's Tennis Association has ranked her World No. 1 in singles on five separate occasions. She became the World No. 1 for the first time on July 8, 2002, and regained this ranking for the fifth time on November 2, 2009. She is the only female player to have won over $40 million in prize money.