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ROGER FEDERER (SUI) Tennis - Gerry Weber Open - Halle / Westf. - ATP 500 - Gerry Weber Stadion - Germany - 2017 | Juergen Hasenkopf Photography
![Go Roger Federer on Twitter: "Roger Federer's first practice session on grass ahead of Stuttgart, Halle and Wimbledon. #KingOfGrass https://t.co/Nf1q0E10Kw" / Twitter Go Roger Federer on Twitter: "Roger Federer's first practice session on grass ahead of Stuttgart, Halle and Wimbledon. #KingOfGrass https://t.co/Nf1q0E10Kw" / Twitter](https://pbs.twimg.com/media/DCEV8tMUAAAVfZh.jpg)
Go Roger Federer on Twitter: "Roger Federer's first practice session on grass ahead of Stuttgart, Halle and Wimbledon. #KingOfGrass https://t.co/Nf1q0E10Kw" / Twitter
![Halle, Germany. 23rd June, 2017. Swiss tennis player Roger Federer during the ATP tennis tournament men's singles quarter final match against Florian Mayer from Germany in Halle, Germany, 23 June 2017. Photo: Halle, Germany. 23rd June, 2017. Swiss tennis player Roger Federer during the ATP tennis tournament men's singles quarter final match against Florian Mayer from Germany in Halle, Germany, 23 June 2017. Photo:](https://c8.alamy.com/comp/JE8684/halle-germany-23rd-june-2017-swiss-tennis-player-roger-federer-during-JE8684.jpg)
Halle, Germany. 23rd June, 2017. Swiss tennis player Roger Federer during the ATP tennis tournament men's singles quarter final match against Florian Mayer from Germany in Halle, Germany, 23 June 2017. Photo:
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