Venus Ebony Starr Williams is an American professional tennis player who is a former World No. 1 and is ranked World No. 11 in singles as of February 1, 2015. She has been ranked World No. 1 in singles by the Women's Tennis Association on three separate occasions, for a total of eleven weeks. She became the World No. 1 for the first time on February 25, 2002, becoming the first black American woman to achieve this feat during the Open Era. She is credited as changing the women's game and ushering a new, modern era of power and athleticism on the women's professional tennis tour. She is also regarded as the best grass court player of her generation and is widely considered as one of the all-time greats of women's tennis.