Question: Who has won more Grand Slam titles, Rennae Stubbs or Alicia Molik?

 She was an Australian Institute of Sport scholarship holder. Rennae Stubbs (born 26 March 1971) is an Australian retired tennis player.  She has won four Grand Slam doubles titles and two Grand Slam mixed doubles titles.  She was ranked world No.1 in doubles for three weeks in 2000.  She represented Australia at four successive Summer Olympic Games: Atlanta 1996, Sydney 2000, Athens 2004, and Beijing 2008. <SEP> Alicia Molik (born 27 January 1981) is an Australian former professional tennis player.  She reached a career-high singles ranking of world No. 8 and won a bronze medal for Australia at the 2004 Athens Olympics by upsetting then world No. 3 and reigning French Open champion Anastasia Myskina.  Molik peaked in the doubles rankings at No. 6 and won two Grand Slam women's doubles titles, the 2005 Australian Open and the 2007 French Open, alongside Svetlana Kuznetsova and Mara Santangelo, respectively.  In addition, she won the 2004 Zurich Open, defeating Maria Sharapova in the final, and reached the finals of the 2004 Wimbledon, 2004 US Open, and 2007 Wimbledon mixed doubles events, as well as the quarterfinals of the 2005 Australian Open singles tournament. <SEP> Alicia Molik and Francesca Schiavone were the defending champions, but Molik did not compete this year.  Schiavone teamed up with Květa Peschke and lost in querterfinals to Elena Likhovtseva and Vera Zvonareva. <SEP> The Williams sisters are two professional American tennis players: Venus Williams (b. 1980), a seven-time Grand Slam title winner (singles), and Serena Williams (b. 1981), twenty-three-time Grand Slam title winner (singles), both of whom were coached from an early age by their parents Richard Williams and Oracene Price.  There is a noted professional rivalry between them – between the 2001 US Open and the 2017 Australian Open tournaments, they met in nine Grand Slam singles finals.  They became the first two players, female or male, to play in 4 consecutive grand slam singles finals from the 2002 French Open to the 2003 Australian Open; Serena famously won all 4 to complete the first of two "Serena Slams".  Between 2000 and 2016, a 17-year span, they collectively won 12 Wimbledon singles titles (Venus won 5 and Serena won 7).  By winning the 2001 Australian Open women's doubles title, they became the 5th pair to complete the Career Doubles Grand Slam and the only pair to complete the Career Doubles Golden Slam.  At the time, Venus and Serena were only 20 and 19 years old, respectively.  Since then they have gone on to add another two Olympic gold medals in the 2008 Beijing Olympics and the 2012 London Olympics.  Nearly a decade later, the duo would go on to win 4 consecutive grand slam doubles titles from 2009 Wimbledon through 2010 Roland Garros, which would catapult them to co-No.  1 doubles players on 7 June 2010.  Two weeks later, on 21 June 2010, Serena would hold the No. 1 singles ranking and Venus would be right behind her at No. 2 in singles.  Their most recent grand slam doubles titles came at the 2012 Wimbledon & 2016 Wimbledon events.  They remain very close, often watching each other's matches in support, even after one of them has been knocked out of a tournament.