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Roger Federer stunned by Juan Martin del Potro as Argentine progresses to semi-finals at US Open - Irish Mirror Online
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Juan Martin del Potro vs Roger Federer in a mouth-watering match! | US Open 2017 Quarterfinal - YouTube
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Roger Federer reveals envy for Juan Martin del Potro after Swiss Indoors title win | Tennis | Sport | Express.co.uk
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Roger Federer and Juan Martin del Potro go head-to-head to reach last four of ATP World Tour Finals | Tennis News | ESPN.co.uk
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Juan Martin del Potro again spoils a Roger Federer-Rafael Nadal U.S. Open meeting - The Washington Post
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Juan Martin del Potro: Roger Federer, Novak Djokovic, Rafael Nadal denied my 'dream' of getting to No. 1 - Eurosport
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Roger Federer says Juan Martin del Potro has 'better chance' of beating Rafael Nadal at US Open | Tennis News | Sky Sports
Tennis news 2022: Juan Martin del Potro retirement 'can't run', injury history, Roger Federer, Rafael Nadal, video
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