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

Context paragraphs:
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.

2012 ABN AMRO World Tennis Tournament – Doubles: Jürgen Melzer and Philipp Petzschner were the defending champions but Melzer decided not to participate. <br>

2012 US Open – Men's Doubles: Jürgen Melzer and Philipp Petzschner were the defending champions, but lost in the second round to Jamie Delgado and Ken Skupski.  Melzer and Petzschner needed a wildcard to compete because they forgot to sign up. <br>

2009 Bank Austria-TennisTrophy – Singles: Philipp Petzschner was the defending champion, but withdrew before the tournament.

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.

2016 ABN AMRO World Tennis Tournament – Doubles: Jean-Julien Rojer and Horia Tecău were the defending champions, but lost in the semifinals to Philipp Petzschner and Alexander Peya. <br>

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.

2012 MercedesCup – Doubles: Jürgen Melzer and Philipp Petzschner were the defending champions but Melzer decided not to participate.  Petzschner plays alongside Michael Kohlmann. <br>

2016 Wrocław Open – Doubles: Philipp Petzschner and Tim Pütz are the defending champions, but decided not to defend their title .

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.

Supporting paragraphs: Marion Bartoli Philipp Petzschner
Answer: Philipp Petzschner