2006 US Open – Men's Singles Rafael Nadal at Roland Garros. Also, he reached a record-equalling 10th consecutive Grand Slam semifinal appearance (streak started at the 2004 Wimbledon Championships), after Rod Laver and Ivan Lendl. This tournament was Andre Agassi's last professional appearance. He played his last match against Benjamin Becker and retired after the US Open. Future champion Juan Martín del Potro made his first appearance in the main draw of the US Open. This was also the first Grand Slam tournament in which future World No. 1's Novak Djokovic and Andy Murray were seeded. They were seeded 20th and 17th respectively. The seeded players
Grand Slam (tennis) Federation designated the Australasian, French (before 1925 only open to members of French tennis clubs), British and American championship tournaments as the four majors. Before that time only three events: Wimbledon, the World Hard Court Championships (held in Paris & once in Brussels) and the World Covered Court Championships (held in various locations) were considered the premier international tennis events by the ILTF. Tony Wilding of New Zealand won all three of those earlier majors in one year: 1913. It has been possible to complete a Grand Slam in most years and most disciplines since 1925. It was not possible