<Tr> <Td_colspan="2"> Last updated on: July 9, 2016 . </Td> </Tr> <P> Serena Jameka Williams (born September 26, 1981) is an American professional tennis player . The Women's Tennis Association (WTA) has ranked her world No. 1 in singles on eight occasions, from 2002 to 2017 . She became the world No. 1 for the first time on July 8, 2002 . On the sixth occasion, she held the ranking for 186 consecutive weeks, tying the record set by Steffi Graf for the most consecutive weeks as world No. 1 by a female tennis player . In total, she has been world No. 1 for 319 weeks, which ranks her third in the Open Era among female tennis players . Some commentators, players and sports writers regard her as the greatest female tennis player of all time . On April 19, 2017, she announced a hiatus from tennis until 2018 because of her pregnancy . </P> <P> Williams holds the most Grand Slam titles in singles, doubles, and mixed doubles combined amongst active players . Her record of 39 Grand Slam titles puts her third on the all - time list and second in the open era: 23 in singles, 14 in women's doubles, and 2 in mixed doubles . She is the most recent female player to have held all four Grand Slam singles titles simultaneously (2002--03 and 2014--15) and the third player to achieve this record twice after Rod Laver and Steffi Graf . She is also, together with her sister Venus, the most recent player to have held all four Grand Slam women's doubles titles simultaneously (2009--10). </P> <P> Her total of 23 Grand Slam singles titles marks the record for the most Grand Slam wins by a tennis player in the Open Era, and is second on the all - time list behind Margaret Court (24). She is the only tennis player in history (man or woman) to have won singles titles at least six times in three of the four Grand Slam tournaments, and the only player ever to have won two of the four Grand Slams seven times each (seven Wimbledon titles and seven Australian Open titles). She is also the only tennis player to have won 10 Grand Slam singles titles in two separate decades . She has won an all - time record of 13 Grand Slam singles titles on hard court . Williams holds the Open Era record for most titles won at the Australian Open (7) and shares the Open Era record for most titles won at the US Open with Chris Evert (6). She also holds the all - time record for the most women's singles matches won at the Grand Slams with 316 matches . </P>

Number of grand slam titles for serena williams