MADRID, Spain -- David Nalbandian battled back to stun world No. 1 Roger Federer with a 1-6 6-3 6-3 victory in the final of the Madrid Masters on Sunday.

David Nalbandian celebrates after upsetting Roger Federer in the Madrid Masters final.

The Argentine, ranked 25th in the world, repeated his 2005 upset win over the Swiss star in that year's season-ending Masters Cup -- also an indoor event.

Defending champion Federer, playing in his first tournament since winning the U.S. Open six weeks ago, made 38 unforced errors.

Nalbandian became only the third player -- and the second this year after Novak Djokovic in Montreal in August -- to beat the world's top-three players en route to winning a title.

German legend Boris Becker was the first to perform the feat 13 years ago.

Nalbandian ousted second-ranked Rafael Nadal in the quarterfinals and then Serbian Djokovic in Saturday's semis.

The 25-year-old, who lost in the Madrid final in 2004, claimed his first triumph on the ATP Tour since May, 2006, on clay in Portugal.

He spent a year without a coach, but has revived his career since teaming up with Hernan Gumy.

"I'm extremely contented to beat the world number one," Nalbandian said. "Roger and I have a long history and I think that influenced the match.

"It was an extremely hard first set. But I tightened the teeth and I began to play more strongly. Things came out fine, I played incredible, and that of course that helps."

Federer added: "He served well, I was quite surprised with how well he served. "He came back strong and played well in the end.

"He was a better player all in all. I was struggling after the first set to play aggressively, for some reason. He played tough and didn't miss any more. I couldn't play way I wanted to. It was a pity, he played a great tournament."  E-mail to a friend
Who did he beat? Who became the third man to beat the world's three top players en route to a title? Who did David Nalbandian beat? what did  he do? What did he achieve? What was the score? Who won the Madrid Masters? Who beat the world's top three players? who won the match? Who placed second? What was the final score? Who was the top seed? What was the outcome of the Argentina-Switzerland match? What was the score against the Swiss? He became third man to do what? Who won Madrid Masters? What was Nalbandian's record? What achievement did he get?
Roger Federer David Nalbandian Roger Federer David Nalbandian battled back to stun world No. 1 Roger Federer with a 1-6 6-3 6-3 to beat the world's top-three players en route to winning a title. 1-6 6-3 6-3 Roger Federer Nalbandian David Nalbandian Roger Federer 1-6 6-3 6-3 Roger Federer 1-6 6-3 6-3 1-6 6-3 6-3 winning a title. David Nalbandian ranked 25th 25th in the world,
question: Who did he beat?, answer: Roger Federer | question: Who became the third man to beat the world's three top players en route to a title?, answer: David Nalbandian | question: Who did David Nalbandian beat?, answer: Roger Federer | question: what did  he do?, answer: David Nalbandian battled back to stun world No. 1 Roger Federer with a 1-6 6-3 6-3 | question: What did he achieve?, answer: to beat the world's top-three players en route to winning a title. | question: What was the score?, answer: 1-6 6-3 6-3 | question: Who won the Madrid Masters?, answer: Roger Federer | question: Who beat the world's top three players?, answer: Nalbandian | question: who won the match?, answer: David Nalbandian | question: Who placed second?, answer: Roger Federer | question: What was the final score?, answer: 1-6 6-3 6-3 | question: Who was the top seed?, answer: Roger Federer | question: What was the outcome of the Argentina-Switzerland match?, answer: 1-6 6-3 6-3 | question: What was the score against the Swiss?, answer: 1-6 6-3 6-3 | question: He became third man to do what?, answer: winning a title. | question: Who won Madrid Masters?, answer: David Nalbandian | question: What was Nalbandian's record?, answer: ranked 25th | question: What achievement did he get?, answer: 25th in the world,