Question: In the 2008 SAP Open-Singles, the defending champion was what British professional tennis player who is a three-time Grand Slam tournament winner?

Context paragraphs:
David Ferrer: David Ferrer Ern (] ; (] ; born 2 April 1982) is a Spanish professional tennis player who is currently ranked world No. 26 in men's singles by the Association of Tennis Professionals (ATP).  A three-time Davis Cup champion with Spain, Ferrer has won tournaments at all levels (ATP 250, ATP 500, Masters 1000) except at a Grand Slam, and currently has the 7th highest career prize money earnings of all time.  Ferrer also holds the distinction of winning the most matches on the ATP tour without having won a Grand Slam tournament, passing Brian Gottfried who held this record for 32 years.

Ken Rosewall: 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.

2012 US Open – Men's singles final: The 2012 US Open Men's Singles final was the championship tennis match of the Men's Singles tournament at the 2012 US Open.  In the final, Andy Murray defeated defending champion Novak Djokovic 7–6, 7–5, 2–6, 3–6, 6–2 to win the match.  It was the equal-longest US Open men's final in history, lasting 4 hours and 54 minutes (equalling the 1988 US Open final played by Ivan Lendl and Mats Wilander), and the equal second-longest men's final in the Open era, only behind the 2012 Australian Open final.  By winning the 2012 US Open, Murray became the first British man since Fred Perry in 1936 to win a Grand Slam singles title, and the first British man in the Open Era to do so.  The match is a significant part of the rivalry between the two players.  This match also marked a milestone for Murray, as it was his 100th match win at a grand slam tournament.

2004 French Open: The 2004 French Open was the 103rd edition of the tournament.  Gastón Gaudio became the first men's Open Era Grand Slam title winner to save match points (2) in the final; the last time that had happened was 70 years earlier.  Gaudio also became the first Argentine man since Guillermo Vilas to win a grand slam, in 1979.  Fellow Argentine Guillermo Coria, widely regarded as the favourite and best clay court player in the world coming into the tournament, was seeded 3rd for the event, whereas Gaudio was unseeded (ranked 44th) and with only two titles to his name, both of which he had won over two years before.  After winning the first two sets convincingly, Coria began suffering from leg cramps. Gaudio won the next two sets; however, Coria came back and was up two breaks of serve in the final set.  Coria had two match points at 6–5 before Gaudio prevailed 0–6, 3–6, 6–4, 6–1, 8–6.  Gaudio also became the first man to win a Grand Slam tournament final after being bagelled in the first set.  The tournament was noted for the excellent performance of the Argentine players – in addition to the two finalists, there were a semifinalist (David Nalbandian) and a quarterfinalist (Juan Ignacio Chela).  It was also highlighted by a first round match between Fabrice Santoro and Arnaud Clément, lasting 6 hours and 33 minutes and ending in Clement's defeat 6–4, 6–3, 6–7, 3–6, 16–14, setting a new record for the longest singles match in the open era, which would stand until Wimbledon 2010.  It was also the last Grand Slam tournament to feature neither Roger Federer nor Rafael Nadal in the semi-finals until the 2012 US Open.

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.

2008 SAP Open – Singles: Andy Murray was the defending champion, but chose not to participate that year.

Andy Murray: Sir Andrew Barron Murray, {'1': ", '2': ", '3': ", '4': "} (born 15 May 1987) is a British professional tennis player from Scotland currently ranked world no. 3 in men's singles.  Murray represents Great Britain in his sporting activities and is a three-time Grand Slam tournament winner, two-time Olympic champion, Davis Cup champion and the winner of the 2016 ATP World Tour Finals.

1999 Wimbledon Championships – Women's Singles: The 1999 Wimbledon Championships – Women's Singles was the women's singles event of the hundred-and-thirteenth edition of Wimbledon, the third Grand Slam of the year, the most prestigious tournament on grass courts, and the oldest tennis tournament in the world.  Jana Novotná was the defending champion, but lost in the quarterfinals to Lindsay Davenport.  Davenport ended up defeating Steffi Graf, 6–4, 7–5, in the final to win without losing a set in the entire tournament.  This was to be the final Grand Slam tournament in which Graf would appear.

2006 French Open: The 2006 French Open was a tennis tournament that took place on the outdoor clay courts at the Stade Roland Garros in Paris, France from May 28 to June 11, 2006.  It was the 105th staging of the French Open, and the second of the four Grand Slam tennis events of 2006.  This edition made history as it became the first Grand Slam tournament to start on a Sunday.  It was the 2nd time since 1985 that all top 4 seeds reached the semi-finals in the men's singles of a Grand Slam tournament.  This did not happen again until the same tournament 5 years later.  Both defending champions, Rafael Nadal and Justine Henin-Hardenne, retained their titles.

Judy Tegart-Dalton: Judy Tegart Dalton (née Tegart; born 12 December 1937) is a retired professional tennis player from Australia who won nine Grand Slam doubles titles.  She won at least one women's doubles title at each Grand Slam tournament, a "career Grand Slam".  Five of her doubles titles were with Margaret Court.  Tegart was the runner-up in 10 Grand Slam doubles tournaments.

Supporting paragraphs: 2008 SAP Open – Singles Andy Murray
Answer: Sir Andrew Barron Murray