Serena Williams

Serena Williams, winner of an Open Era-record 23 Grand Slam singles titles, unveils the joys and pains of her private life in an HBO documentary debuting Wednesday. In the five-part series, the former WTA world number one recounts her victory in last year's Australian Open, complications surrounding the birth of her eight-month-old daughter Olympia and her wedding to Alexis Ohanian last November.