Andre Agassi significant championships. In 1998, Agassi began a rigorous conditioning program and worked his way back up the rankings by playing in Challenger Series tournaments, a circuit for pro players ranked outside the world's top 50. After returning to top physical and mental shape, Agassi recorded the most successful period of his tennis career and also played classic matches in that period against Pete Sampras and Patrick Rafter. In 1998, Agassi won five titles and leapt from No. 110 to No. 6, the highest jump into the top 10 made by any player during a calendar year. At Wimbledon, he had
Andre Agassi several other events, eventually skipping the entire clay-court season including the French Open. This caused his ranking to drop out of the top 10 for the last time. Agassi returned for the grass-court season, playing a tune-up, and then Wimbledon. He was defeated in the third round by world No. 2 (and eventual runner-up) Rafael Nadal. Against conventions, Agassi, the losing player, was interviewed on court after the match. At Wimbledon, Agassi announced his plans to retire following the US Open. Agassi played only two events during the summer hard-court season with his best result being a quarterfinal loss at