Question: Which tennis player was born first, Samantha Jane "Sam" Stosur (Samantha Stosur) or Ivan Lendl?
Context: Tathiana Garbin (born 30 June 1977) is an Italian retired tennis player.  Garbin is probably best known for her surprise defeat of the defending champion and the reigning World No. 1 Justine Henin in the second round of the 2004 French Open.  The winner of one singles and eleven doubles WTA Tour titles, she reached her highest singles ranking World No. 22 on 21 May 2007, and her highest doubles ranking World No. 25 on 27 August 2001.  Other high–ranked players she defeated include Jelena Dokić, Chanda Rubin, Flavia Pennetta, Agnieszka Radwańska, Nadia Petrova, Marion Bartoli and Samantha Stosur. This is a list of the main career statistics of professional Australian tennis player, Samantha Stosur.  To date, Stosur has won eight WTA singles titles including one Grand Slam singles title at the 2011 US Open.  She was also the runner-up at the 2010 French Open and a semi-finalist at the 2010 and 2011 WTA Tour Championships.  Stosur has also enjoyed a successful doubles career, in which she has held the World No. 1 ranking and won twenty-four WTA doubles titles including two grand slam women's doubles titles at the 2005 US Open and 2006 French Open and two year-ending championships at the 2005 and 2006 WTA Tour Championships. Christian Bergström (born 19 July 1967 in Gothenburg) is a former tennis player from Sweden, who turned professional in 1985.  He didn't win any titles (neither singles nor doubles) during his career, but reached three singles quarter-finals in Grand Slam tournaments: Wimbledon (1990, 1994) and Australian Open (1993).  The right-hander reached his highest individual ranking on the ATP Tour on 27 January 1992, when he became World No. 32.  He played two ATP singles finals, both in Adelaide (1992–93).  He was also the first player to defeat Ivan Lendl in the first round of the 1992 Australian Open, snapping Lendl's record run of 40 first round victories by consecutive appearances in a grand slam. Samantha Jane "Sam" Stosur ( ; born 30 March 1984) is an Australian professional tennis player.  She is a former world No. 1 in doubles, a ranking which she held for 61 weeks, and a former world No. 4 in singles. Lisa Raymond and Samantha Stosur were the defending women's doubles champions at the 2007 Pacific Life Open tennis tournament played at the Indian Wells Tennis Garden in Indian Wells, California, USA.  They were seeded first of the 16 doubles teams that participated and extended their title by beating Chan Yung-jan and Chuang Chia-jung 6–3, 7–5 in the final. This is a list of the main career statistics of professional German tennis player, Sabine Lisicki.  Highlights of Lisicki's career include winning four WTA singles titles and a finals appearance at the 2013 Wimbledon Championships.  She was also a semi-finalist at the event in 2011 and a quarterfinalist on three other occasions.  Lisicki has also won three WTA doubles titles and reached the final of the 2011 Wimbledon Championships in women's doubles with Samantha Stosur as her partner. The Connors–Lendl rivalry was a tennis rivalry played between American Jimmy Connors and Czech-American Ivan Lendl, who met 35 times.  Connors, who is 7 and a half years older than Lendl, won the first 8 matches, while Lendl won the last 17 and ended up leading the rivalry 22–13. Donald Dell (born June 17, 1938 in Savannah, Georgia, United States) is an attorney and was a professional tennis player, U.S. Davis Cup captain, and administrator.  Dell was one of the first professional sports agents, having represented professional tennis players Arthur Ashe, Stan Smith, Jimmy Connors, and Ivan Lendl during pro tennis' golden age (1975 to 1985).  He was also the founder of Professional Services (ProServ), one of the nation's first sports marketing firms established in 1970 with co-founder, Frank Craighill, a fellow law partner.  His younger brother, Dick, worked for ProServ managing US Open champion Gabriela Sabatini, and played Number One Singles for the University of Michigan.  He was Big Ten #1 Singles Champion in 1969. Gisela Dulko (] ; born 30 January 1985, in Tigre) is a retired professional tennis player from Argentina.  Although she enjoyed modest success in singles, reaching world no. 26 and winning four WTA Tour titles, her speciality was doubles, where she achieved a world no. 1 ranking.  Partnering with Flavia Pennetta, Dulko won the 2010 WTA Tour Championships and the 2011 Australian Open in doubles.  Dulko also reached the mixed doubles final at the 2011 US Open, with Edward Schwank.  She is remembered for her ability to upset the big names on the tour, such as Maria Sharapova in the second round of Wimbledon in 2009; and Samantha Stosur in the third round of Roland Garros in 2011.  She also beat Martina Navratilova in the second round of Wimbledon in 2004 in Navratilova's final Grand Slam singles match. Ivan Lendl (] ; born March 7, 1960) is a retired tennis player originally from Czechoslovakia who became a United States citizen in 1992.  He is often considered among the greatest in the sport's history.  He was the world No. 1 for 270 weeks in the 1980s and finished his career with 94 singles titles.  At the majors he won eight titles and was runner-up a record 11 times.  He also won seven year-end championships and a record 22 Grand Prix Super Series titles.
Answer: Ivan Lendl