![Switzerland's Roger Federer returns the ball to Argentina's Juan Martin del Potro during their semifinal match of the French Open tennis tournament at the Roland Garros stadium in Paris, Friday June 5, Switzerland's Roger Federer returns the ball to Argentina's Juan Martin del Potro during their semifinal match of the French Open tennis tournament at the Roland Garros stadium in Paris, Friday June 5,](https://c8.alamy.com/comp/2P8D8X5/switzerlands-roger-federer-returns-the-ball-to-argentinas-juan-martin-del-potro-during-their-semifinal-match-of-the-french-open-tennis-tournament-at-the-roland-garros-stadium-in-paris-friday-june-5-2009-ap-photobernat-armangue-2P8D8X5.jpg)
Switzerland's Roger Federer returns the ball to Argentina's Juan Martin del Potro during their semifinal match of the French Open tennis tournament at the Roland Garros stadium in Paris, Friday June 5,
![That Championship Season: Juan Martin del Potro, 2009 - Official Site of the 2023 US Open Tennis Championships - A USTA Event That Championship Season: Juan Martin del Potro, 2009 - Official Site of the 2023 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/b_Del-Potro-2_50th.jpg)
That Championship Season: Juan Martin del Potro, 2009 - Official Site of the 2023 US Open Tennis Championships - A USTA Event
![50 for 50: Juan Martin del Potro, 2009 men's singles champion - Official Site of the 2023 US Open Tennis Championships - A USTA Event 50 for 50: Juan Martin del Potro, 2009 men's singles champion - Official Site of the 2023 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/f_Del-Potro-2009-50thSeries.jpg)
50 for 50: Juan Martin del Potro, 2009 men's singles champion - Official Site of the 2023 US Open Tennis Championships - A USTA Event
![I Knew Roger Federer Was Tired" - Juan Martin Del Potro Recalls US Open 2009 Victory - EssentiallySports I Knew Roger Federer Was Tired" - Juan Martin Del Potro Recalls US Open 2009 Victory - EssentiallySports](http://www.essentiallysports.com/wp-content/uploads/us-open-victory-over-roger-federer-still-makes-juan-martin-del-potro-nervous.jpg)