Question: Who is older, Marion Bartoli or Philipp Petzschner?

full_context: Document 1: Pete Sampras: Pete Sampras (born August 12, 1971) is a retired American tennis player widely regarded as one of the greatest in the history of the sport. He was a right-handed player with a single-handed backhand and a precise and powerful serve that earned him the nickname "Pistol Pete". His professional career began in 1988 and ended at the 2002 US Open, which he won, defeating rival Andre Agassi in the final.
Document 2: Philipp Petzschner: Philipp Petzschner (born 24 March 1984) is a professional German tennis player. He is known for his hard-hitting forehand and bursts of speed around the court. His career-high doubles ranking is world no. 9, which he achieved in April 2011.
Document 3: 2009 PBZ Zagreb Indoors – Doubles: Paul Hanley and Jordan Kerr were the defending champions, but lost in the quarterfinals to Philipp Petzschner and Alexander Peya.
Document 4: 2008 French Open – Women's Singles: Justine Henin was the three-time defending champion, but she retired from the sport on May 14, 2008. Her retirement left Serena Williams as the only former French Open champion remaining in the women's draw. Williams was defeated in the third round by Katarina Srebotnik, meaning that there would be a first-time French Open champion in 2008.
Document 5: Garbiñe Muguruza: Garbiñe Muguruza Blanco (] ; born 8 October 1993) is a Spanish-Venezuelan tennis player who is currently ranked world No. 1 in singles by the Women's Tennis Association (WTA). Since turning professional in 2012, she has won five singles titles, including two majors at the 2016 French Open and the 2017 Wimbledon Championships.
Document 6: 2011 Aegon International – Women's Singles: Ekaterina Makarova was the defending champion, but lost to Petra Kvitová in the second round. Kvitová eventually lost the final 1–6, 6–4, 5–7 to Frenchwoman Marion Bartoli. It was Bartoli's first title of the year and sixth of her career. It was her second Premier-level career title and first on grass courts.
Document 7: Iva Majoli: Iva Majoli Marić (Iva Majoli) (born 12 August 1977) is a former professional tennis player from Croatia. She upset Martina Hingis to win the women's singles title at the French Open in 1997. Majoli also won seven other singles titles and one doubles title during her career. She reached a career-high singles ranking of world No. 4 in February 1996.
Document 8: Li Na: Li Na (; ; born 26 February 1982) is a retired Chinese professional tennis player, who achieved a career-high WTA-ranking of world No. 2 on 17 February 2014. Over the course of her career, Li won seven WTA singles titles and two Grand Slam singles titles at the 2011 French Open and 2014 Australian Open. Li's rise to prominence came after those victories, which made her the first and only Grand Slam singles champion from East Asia and Asia as a whole. Prior to this, she had already become the first player representing an East Asian and Asian country to appear in a Grand Slam singles final, a milestone she achieved at the 2011 Australian Open. Li was also the runner-up at the 2013 Australian Open and 2013 WTA Tour Championships, a three-time quarterfinalist at Wimbledon and a semifinalist at the 2008 Beijing Olympic Games and 2013 US Open. Among her other most notable accolades, she was the first Chinese player to win a WTA tour title at the Guangzhou International Women's Open in 2004, the first to reach a Grand Slam singles quarterfinal at the 2006 Wimbledon Championships, and the first to break into the world's top 10. Her feats have sparked a major population growth of tennis players in East Asia, earning her the reputation as the region's tennis pioneer and trailblazer.
Document 9: Marion Bartoli career statistics: This is a list of the main career statistics of tennis player Marion Bartoli.
Document 10: Marion Bartoli: Marion Bartoli (] ; born 2 October 1984) is a French former professional tennis player. She won the 2013 Wimbledon Championships singles title after previously being runner-up in 2007 and was a semifinalist at the 2011 French Open. She also won eight Women's Tennis Association singles titles and three doubles titles. She announced her immediate retirement from professional tennis on 14 August 2013.
Document 11: Petra Cetkovská: Petra Cetkovská (] ; born 8 February 1985 in Prostějov, Czechoslovakia) is a professional tennis player from the Czech Republic. She reached her career-high singles ranking world no. 25 in June 2012. Over her career, Cetkovská has beaten top players: Marion Bartoli, Elena Dementieva, Ana Ivanovic, Angelique Kerber, Li Na, Agnieszka Radwańska, Caroline Wozniacki, and Vera Zvonareva.
Document 12: 2009 Bank Austria-TennisTrophy – Singles: Philipp Petzschner was the defending champion, but withdrew before the tournament.
Document 13: Diego Schwartzman: Diego Sebastián Schwartzman (] , ] ; born 16 August 1992) is an Argentine professional tennis player competing mainly on the ATP Tour. He has won one ATP singles title, and reached a career-high singles ranking of world No. 28 in 2017. He is a clay court specialist, and is noted for his "deadly" return game.
Document 14: Petr Pála: Petr Pála (born 2 October 1975) is a former professional tennis player from the Czech Republic. Together with Pavel Vízner he reached the men's doubles final of the 2001 French Open but lost to Indians Mahesh Bhupathi and Leander Paes (6–7, 3–6). Pála was coached by his father František, who was a professional tennis player on the ATP tour.
Document 15: 2012 MercedesCup – Doubles: Jürgen Melzer and Philipp Petzschner were the defending champions but Melzer decided not to participate. Petzschner plays alongside Michael Kohlmann.<br>
ground_truth: Philipp Petzschner