![New York, USA. 7th September 2018. US Open Tennis: Argentina's Juan Martin del Potro serving to Spain's Rafael Nadal, during their semifinal match at the US Open in Flushing Meadows, New York. New York, USA. 7th September 2018. US Open Tennis: Argentina's Juan Martin del Potro serving to Spain's Rafael Nadal, during their semifinal match at the US Open in Flushing Meadows, New York.](https://c8.alamy.com/comp/PJJW21/new-york-usa-7th-september-2018-us-open-tennis-argentinas-juan-martin-del-potro-serving-to-spains-rafael-nadal-during-their-semifinal-match-at-the-us-open-in-flushing-meadows-new-york-nadal-retired-after-the-second-set-and-del-potro-will-face-novak-djokovic-in-sundays-final-credit-adam-stoltmanalamy-live-news-PJJW21.jpg)
New York, USA. 7th September 2018. US Open Tennis: Argentina's Juan Martin del Potro serving to Spain's Rafael Nadal, during their semifinal match at the US Open in Flushing Meadows, New York.
![Juan Martin Del Potro: 5 Reasons Why He Can Topple Nadal, Federer and Djokovic | News, Scores, Highlights, Stats, and Rumors | Bleacher Report Juan Martin Del Potro: 5 Reasons Why He Can Topple Nadal, Federer and Djokovic | News, Scores, Highlights, Stats, and Rumors | Bleacher Report](https://cdn.bleacherreport.net/images_root/slides/photos/000/999/677/111052084_display_image.jpg?1307532489)
Juan Martin Del Potro: 5 Reasons Why He Can Topple Nadal, Federer and Djokovic | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
![Juan Martin Del Potro, or Delpo, of Argentina serves against Roger Federer of Switzerland in their semifinal of men's singles during the Shanghai Role Stock Photo - Alamy Juan Martin Del Potro, or Delpo, of Argentina serves against Roger Federer of Switzerland in their semifinal of men's singles during the Shanghai Role Stock Photo - Alamy](https://c8.alamy.com/comp/W7ER1A/juan-martin-del-potro-or-delpo-of-argentina-serves-against-roger-federer-of-switzerland-in-their-semifinal-of-mens-singles-during-the-shanghai-role-W7ER1A.jpg)
Juan Martin Del Potro, or Delpo, of Argentina serves against Roger Federer of Switzerland in their semifinal of men's singles during the Shanghai Role Stock Photo - Alamy
![Juan Martin del Potro, Other Top Tennis Players Find Success Behind Second Serves | ATP Tour | Tennis Juan Martin del Potro, Other Top Tennis Players Find Success Behind Second Serves | ATP Tour | Tennis](https://www.atptour.com/en/news/www.atptour.com/-/media/images/news/2016/11/28/15/50/del-potro-infosys-november-2016.jpg)