![Halle, Germany. 17th June, 2015. Roger Federer of Switzerland in action during the round of 16 match against Gulbis of Latvia at the ATP tennis tournament in Halle, Germany, 17 June 2015. Halle, Germany. 17th June, 2015. Roger Federer of Switzerland in action during the round of 16 match against Gulbis of Latvia at the ATP tennis tournament in Halle, Germany, 17 June 2015.](https://c8.alamy.com/comp/EW43EH/halle-germany-17th-june-2015-roger-federer-of-switzerland-in-action-EW43EH.jpg)
Halle, Germany. 17th June, 2015. Roger Federer of Switzerland in action during the round of 16 match against Gulbis of Latvia at the ATP tennis tournament in Halle, Germany, 17 June 2015.
![Halle, Germany. 18th June, 2015. Gael Monfils of France in action in the round of 16 match against Mikhail Kukushkin of Kazakhstan during the ATP tennis tournament in Halle, Germany, 18 June Halle, Germany. 18th June, 2015. Gael Monfils of France in action in the round of 16 match against Mikhail Kukushkin of Kazakhstan during the ATP tennis tournament in Halle, Germany, 18 June](https://c8.alamy.com/comp/EW7635/halle-germany-18th-june-2015-gael-monfils-of-france-in-action-in-the-EW7635.jpg)
Halle, Germany. 18th June, 2015. Gael Monfils of France in action in the round of 16 match against Mikhail Kukushkin of Kazakhstan during the ATP tennis tournament in Halle, Germany, 18 June
![Italian tennis player Andreas Seppi in action at the ATP tournament in Halle, Stock Photo, Picture And Rights Managed Image. Pic. PAH-59378835 | agefotostock Italian tennis player Andreas Seppi in action at the ATP tournament in Halle, Stock Photo, Picture And Rights Managed Image. Pic. PAH-59378835 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/9901defbf377fc42d5aa4adec31fa1bf/pah-59378835.jpg)
Italian tennis player Andreas Seppi in action at the ATP tournament in Halle, Stock Photo, Picture And Rights Managed Image. Pic. PAH-59378835 | agefotostock
![Halle (Westfalen), Germany. 20th June, 2015. Roger Federer cheers during a match of the Gerry Weber Open semi-finals against Ivo Karlovic in Halle (Westfalen). Credit: Miroslav Dakov/Alamy Live News Stock Photo - Halle (Westfalen), Germany. 20th June, 2015. Roger Federer cheers during a match of the Gerry Weber Open semi-finals against Ivo Karlovic in Halle (Westfalen). Credit: Miroslav Dakov/Alamy Live News Stock Photo -](https://c8.alamy.com/comp/EW8RHR/halle-westfalen-germany-20th-june-2015-roger-federer-cheers-during-EW8RHR.jpg)
Halle (Westfalen), Germany. 20th June, 2015. Roger Federer cheers during a match of the Gerry Weber Open semi-finals against Ivo Karlovic in Halle (Westfalen). Credit: Miroslav Dakov/Alamy Live News Stock Photo -
![Germany's Tommy Haas returns the ball during his semifinal tennis match against Switzerland's Roger Federer at the ATP Gerry Weber Open tornament in Halle, Westphalia, Germany, Saturday, June 15, 2013. (AP Photo/Martin Germany's Tommy Haas returns the ball during his semifinal tennis match against Switzerland's Roger Federer at the ATP Gerry Weber Open tornament in Halle, Westphalia, Germany, Saturday, June 15, 2013. (AP Photo/Martin](https://c8.alamy.com/comp/2N7A4BF/germanys-tommy-haas-returns-the-ball-during-his-semifinal-tennis-match-against-switzerlands-roger-federer-at-the-atp-gerry-weber-open-tornament-in-halle-westphalia-germany-saturday-june-15-2013-ap-photomartin-meissner-2N7A4BF.jpg)
Germany's Tommy Haas returns the ball during his semifinal tennis match against Switzerland's Roger Federer at the ATP Gerry Weber Open tornament in Halle, Westphalia, Germany, Saturday, June 15, 2013. (AP Photo/Martin
![Dustin Brown (GER) Tennis - Gerry Weber Open - Halle / Westf. - ATP 500 - Gerry Weber Stadion - Germany - 2015 | Juergen Hasenkopf Photography Dustin Brown (GER) Tennis - Gerry Weber Open - Halle / Westf. - ATP 500 - Gerry Weber Stadion - Germany - 2015 | Juergen Hasenkopf Photography](https://m.psecn.photoshelter.com/img-get2/I00005je2.ph_M.w/fit=1000x750/Dustin-Brown-20150618-15194906.jpg)