Question: Who has a higher career-high ranking, Li Na or Arnaud Clément?

Context paragraphs:
2008 Open 13 – Doubles: Arnaud Clément and Michaël Llodra were the defending champions; however, they withdrew to due a left ankle injury for Clément.

Li Baozhen: Li Baozhen (李抱真) (733–794), né An Baozhen (安抱真), courtesy name Taixuan (太玄), formally the Prince of Yiyang (義陽王), was a general of the Chinese dynasty Tang Dynasty.  He initially distinguished himself as deputy for his cousin Li Baoyu, and after Li Baoyu's death came into command of his own.  He played substantial roles in fighting the rebellions during Emperor Dezong's reign against Zhu Tao, Wang Wujun, Tian Yue, and Li Na; and later in persuading Wang, Tian, and Li to again submit to Emperor Dezong.

Li Na &amp; Friends Tennis Exhibition 2011: The Li Na & Friends Tennis Exhibition 2011 was a one-off women's exhibition tennis tournament, held on 17 and 18 December, featuring two of the best ranked women, Li Na and Sabine Lisicki, and men's legends Pete Sampras and Carlos Moyá.  It was held in Wuhan, China, and was sponsored by IMG Worldwide.

2005 Pacific Life Open – Men's Doubles: Arnaud Clément and Sébastien Grosjean were the defending champions, but did not partner together this year.  Clément partnered Jaroslav Levinský, losing in the first round.  Grosjean partnered Gaël Monfils, losing in the second round.

2010 Challenger DCNS de Cherbourg – Doubles: Arnaud Clément and Édouard Roger-Vasselin were the defending champions, but they elected to defend their title with different partners.Clément partnered up with David Guez, but they withdrew before their quarterfinal match against Harsh Mankad and Adil Shamasdin. Roger-Vasselin partnered up with Nicolas Mahut and they won in the final 6–2, 6–4, over Mankad and Shamasdin.

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.

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.

Sonchat Ratiwatana: Sonchat Ratiwatana (Last name pronounce : Ra-Ti-Wat) (Thai: สนฉัตร รติวัฒน์ 'ต้น') (born January 23, 1982 in Bangkok) is a professional tennis player from Thailand.  In 2007, Sonchat and his twin brother Sanchai Ratiwatana won their first ATP doubles title in Bangkok in their home country.  In the final, the team beat 2007 Wimbledon men's doubles winner Michaël Llodra and 2007 U.S. Open men's doubles semifinalist Nicolas Mahut.  He reached his highest doubles ranking at world number 39 as of 28 April 2008.  He plays right-handed and turned professional in 2004.  He and his twin brother played in their first grand slam tournament during the Australian Open in 2008, where they lost to the eventual finalist pairing of Arnaud Clément & Michaël Llodra of France in the first round.

Li Na career statistics: This is a list of the main career statistics of Chinese professional tennis player, Li Na.  Over the course of her career, Li won nine WTA singles titles, including two Grand Slam singles titles at the 2011 French Open and 2014 Australian Open and one WTA Premier 5 singles title at the 2012 Western & Southern Open.  She also finished in fourth place at the 2008 Beijing Olympics and was the runner-up at the 2011 and 2013 Australian Open and 2013 WTA Tour Championships.  Li achieved a career high singles ranking of World No. 2 on February 17, 2014.

Arnaud Clément: Arnaud Clément (born 17 December 1977) is a retired professional tennis player and the current captain of the France Davis Cup team.  He reached the final of the 2001 Australian Open and achieved a career-high ranking of World No. 10 in April the same year.

Supporting paragraphs: Li Na Arnaud Clément
Answer: Li Na