[The Conversation Africa] US icon Serena Williams, considered one of the greatest tennis players of all time, is retiring from professional tennis. Williams has won 23 grand slam singles titles, more than any other woman or man during the professional era, which began in 1968. Coached by her father, she changed the face of the women's game. In the process, through speaking frankly about her life and career, she became a role model for many black women around the world. Tennis Kenya secretary general and former player Wanjiru Mbugua
