Chris Evert (USA) - Nov 3, 1975 Nov 24, 1985; Evonne Goolagong (AUS) - Apr 26, 1976 May 9, 1976; Martina Navratilova (USA) - Jul 10, 1978 Aug 16, 1987; Tracy Austin (USA) - Apr 7, 1980 Nov 17, 1980; Steffi Graf (GER) - Aug 17, 1987 Mar 30, 1997; Monica Seles (USA) - Mar 11, 1991 Nov 24, 1996; Arantxa Sanchez-Vicario (ESP)- Feb 6, 1995 Jun 11, 1995; Martina Hingis (SUI) - Mar 31, 1997 Oct 14, 2001; Lindsay Davenport (USA) - Oct 12, 1998 Jan 29, 2006; Jennifer Capriati (USA) - Oct 15, 2001 Jun 9, 2002; Venus Williams (USA)- Feb 25, 2002 Jul 7, 2002; Serena Williams (USA) - Jul 8, 2002 Oct 10, 2010; Kim Clijsters (BEL) - Aug 11, 2003 Feb 14, 2011; Justine Henin (BEL) - Oct 20, 2003 May 18, 2008; Amelie Mauresmo (FRA) - Sep 13, 2004 Nov 12, 2006; Maria Sharapova (RUS) - Aug 22, 2005 Jun 8, 2008; Ana Ivanovic (SEB) - Jun 9, 2008 Sep 7, 2008; Jelena Jankovic (SEB) - Aug 11, 2008 Feb 1, 2009; Dinara Safina (RUS) - Apr 20, 2009 Nov 1, 2009; Caroline Wozniacki (DEN) - Oct 11, 2010 Jan 29, 2012; * Victoria Azarenka (BLU) - Jan 30, 2012

* Will take top spot when the rankings are updated on Jan 30, 2012