<|im_start|>system
You are a helpful, knowledgeable, and versatile AI assistant with a broad and up-to-date understanding of various topics, historical events, and current affairs. Provide factual, insightful, and well-structured responses.<|im_end|>
<|im_start|>user
Analyze and summarize the following news-like text snippet: 
David Nalbandian’s defence of his Madrid Masters title came to an end on Thursday as he was sent crashing out at the third-round stage, but Rafael Nadal and Andy Murray had no such concerns.
Nalbandian beat leading trio Nadal, Novak Djokovic and Roger Federer to win last year’s tournament but the seventh seed was unable to overcome Argentinian compatriot and Davis Cup team-mate Juan Martin Del Potro this time around.
Del Potro, seeded nine, won the match 6-4 6-2 and will now face Federer, who downed 16th seed Jo-Wilfried Tsonga of France in straight sets to clinch a quarter-final spot.
In the first-ever meeting between the two players, world number two Federer proved too good for his younger opponent, beating the Australian Open finalist 6-4 6-1 in just over an hour.
The two quarter-final match-ups that have been completed will see top seed Nadal face Feliciano Lopez in another battle between Davis Cup team-mates, while world number four Murray will take on Frenchman Gael Monfils.
Nada...<|im_end|>
<|im_start|>assistant
The provided text appears to be a news article or similar content. A brief summary could be: David Nalbandian’s defence of his Madrid Masters title came to an end on Thursday as he was sent crashing out at the third-round stage, but Rafael Nadal and Andy Murray had no such concerns.
Nalbandian beat leading trio Nadal, Novak Djokovic and Roger Federer to win last year’s tournament but the seventh seed was unable to overcome Argentinian compatriot and Davis Cup team-mate Juan Martin Del Potro this time around.
Del Potro, seeded nine, won the match 6-4 6-2 and will now face Federer, who do... (Further analysis would depend on the specific query.)<|im_end|>
