Rossana de los Ríos (born 16 September 1975) is a retired professional tennis player from Paraguay.
 She was born in the Paraguayan capital, Asunción, and now lives in Miami, USA, with her daughter Ana Paula Neffa de los Ríos and her husband Gustavo Neffa, a retired Paraguayan Association football player who played for Boca Juniors.
 Rossana achieved a career high singles ranking of No. 51 on 12 September 2001, and No. 52 in doubles on the Sony Ericsson WTA Tour.
 De los Ríos played doubles with Grand Slam champions such as Maria Sharapova, Svetlana Kuznetsova, Arantxa Sánchez Vicario, as well as Jelena Janković and Dinara Safina.
 Rossana is also a former world number one Junior player, having won the 1992 Roland Garros Juniors event.
 De los Ríos participated in six editions (1994, 2001, 2002, 2003, 2009 and 2010) of the Australian Open.
 She was the only female tennis representative for Paraguay in the 1992 and 2000 Olympic Games.
Virginia Ruano Pascual and Paola Suárez were the defending champions and won in the final 6–2, 6–3, against Svetlana Kuznetsova and Martina Navratilova in straight sets.
 This was Ruano Pascual's 4th career Grand Slam doubles title and her 2nd title at the US Open.
 It was also Suárez' 4th career Grand Slam doubles title and her 2nd title at the US Open.
Regina Aleksandrovna Kulikova (Russian: Регина Александровна Куликова, born 30 January 1989) is a former professional Russian tennis player.
 Her highest WTA singles ranking is 65th, which she reached on May 3, 2010.
 Her career high in doubles is 417th, which she reached on 28 September 2009.
 Her best result on the WTA tour so far is the quarterfinal appearance at the 2010 Dubai Tennis Championships where she defeated Svetlana Kuznetsova.
 Her biggest victory at a Grand Slam tournament came at the 2011 Australian Open, where she defeated former semi-finalist Daniela Hantuchová in the first round.
Garbiñe Muguruza was the defending champion, but lost to Kristina Mladenovic in the fourth round.
 Muguruza's defeat—along with those of Svetlana Kuznetsova, Venus Williams and Samantha Stosur in the same round—ensured that for the first time in a Grand Slam tournament since the 1979 Australian Open, none of the quarterfinalists were former Grand Slam champions.
Vera Igorevna Zvonareva (Russian: Ве́ра И́горевна Звонарёва ; ] ; born 7 September 1984) is a Russian professional tennis player.
 She was introduced to tennis at the age of six and turned professional in 2000.
 Her career high is world No. 2 by the WTA.
 Zvonareva has won twelve WTA Tour singles titles and reached the finals of the 2008 WTA Tour Championships, 2010 Wimbledon Championships, and 2010 US Open.
 She also was a bronze medalist at the 2008 Beijing Olympics.
 In doubles, she has won four Grand Slam titles.
 Two of the titles came in women's doubles, the first one at the 2006 US Open, partnering Nathalie Dechy, and the other at the 2012 Australian Open, partnering Svetlana Kuznetsova.
 Her other two came in mixed doubles, the first at the 2004 US Open, partnering Bob Bryan, and her second at the 2006 Wimbledon Championships, partnering Andy Ram.
Paul Vincent Nicholas Haarhuis (born 19 February 1966) is a Dutch former professional tennis player.
 He is a former World No. 1 doubles player and reached a career-high singles ranking of World No. 18 in November 1995.
 He won six Grand Slam men's doubles titles, five with Jacco Eltingh and one with Yevgeny Kafelnikov.
The 2010 Billie Jean King Cup was the 2nd edition of this tennis exhibition tournament.
 Seven-time Grand Slam champion Venus Williams, 2009 French Open Champion Svetlana Kuznetsova, and 2009 US Open Champion Kim Clijsters participated.
 2009 Australian Open and Wimbledon Champion Serena Williams had to withdraw from the event due to a leg injury.
 She was replaced by 2008 French Open Champion Ana Ivanovic.
 In the first semifinal, Clijsters defeated Ivanovic in a tiebreaker (7–2), despite Ivanovic having match point at 5–4 up.
 Williams defeated Kuznetsova in the second semifinal, 6–4.
 Williams defeated Clijsters in the championship match by a score of 6–4 3–6 7–5.
Svetlana Aleksandrovna Kuznetsova (Russian: Светла́на Алекса́ндровна Кузнецо́ва ; ] ; born 27 June 1985) is a Russian tennis player.
 Kuznetsova has appeared in four Grand Slam singles finals, winning two, and has also appeared in seven doubles finals, winning twice.
 As a doubles player, Kuznetsova has reached the finals of each Grand Slam at least once, winning the Australian Open twice.
 She is currently the No. 8 ranked player on the WTA rankings.
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.
Kenneth Robert Rosewall {'1': ", '2': ", '3': 'AM, MBE', '4': "} (born 2 November 1934) is a former world top-ranking amateur and professional tennis player from Australia.
 He won a record 23 tennis Majors including 8 Grand Slam singles titles and before the Open Era a record 15 Pro Slam titles and a record 35 Major finals overall.
 He won the Pro Grand Slam in 1963.
 Rosewall won 9 slams in doubles with a career double grand slam.
 He is considered to be one of the greatest tennis players of all time.
 He had a renowned backhand and enjoyed a long career at the highest levels from the early 1950s to the early 1970s.
 Rosewall was one of the two best male players for about nine years and was the World No. 1 player for a number of years in the early 1960s.
 He was ranked among the top 20 players, amateur or professional, every year from 1952 through 1977.
 Rosewall is the only player to have simultaneously held Pro Grand Slam titles on three different surfaces (1962–1963).
 At the 1971 Australian Open he became the first male player during the open era to win a Grand Slam tournament without dropping a set.

Question: Who has won more Grand Slam titles, Paul Haarhuis or Svetlana Kuznetsova?
Answer: Paul Vincent Nicholas Haarhuis