he lost to Nicolas Lapentti in the quarterfinals, and at Stuttgart, where he lost to Fernando González in the round of 32. At Umag, he lost to Carlos Moyá in the semifinals. After playing two more Challenger level events, the last of his career, Nadal finished his 2003 campaign with three first round losses in ATP events. Nadal also competed in seven doubles tournaments in 2003, and won his first ATP title (doubles or singles) at Umag, partnering Álex López Morón to defeat Todd Perry and Thomas Shimada in the final. 2004 started with a doubles title alongside Tommy Robredo at the Chennai Open. In singles, Nadal reached the third round of the Australian Open, where he lost in straight-sets to former world No. 1 and Australian native Lleyton Hewitt. Later that year, Nadal played the first of his many matches against Roger Federer, then ranked No. 1, in the third round of the Miami Open, winning in straight sets before a loss to Fernando González in the fourth round. He missed most of the clay court season, including the French Open, because of a stress fracture in his left ankle. In August, Nadal won his first ATP singles title at the Prokom Open by defeating José Acasuso in the final. Nadal, at 18 years and six months of age, became the youngest player to register a singles victory in a Davis Cup final for a winning nation. By beating world No. 2 Andy Roddick on clay in Spain, he helped Spain clinch the 2004 title over the United States. He finished the year ranked as the world No. 51. 2005: First major title At the 2005 Australian Open, Nadal lost in the fourth round to eventual runner-up Lleyton Hewitt. Two months later, he reached the final of the 2005 Miami Masters, and despite being two points from a straight-sets victory, he was defeated in five sets by No. 1 Roger Federer. Both performances were considered breakthroughs for Nadal. He then dominated the spring clay-court season. He won 24 consecutive singles matches, breaking Andre Agassi's Open Era record of consecutive match wins for a male teenager. Nadal won the Torneo Conde de Godó in Barcelona and beat 2004 French Open runner-up Guillermo Coria in the finals of the 2005 Monte Carlo Masters and the 2005 Italian Open. These victories raised his ranking to world No. 5 and made him one