![Tennis player Roger Federer of Switzerland, right, and teammate Yves Allegro celebrate during their Davis Cup World Group Play-off double against Great Britain in Geneva, Switzerland, on Saturday, Sept. 24, 2005. (AP Tennis player Roger Federer of Switzerland, right, and teammate Yves Allegro celebrate during their Davis Cup World Group Play-off double against Great Britain in Geneva, Switzerland, on Saturday, Sept. 24, 2005. (AP](https://c8.alamy.com/comp/2PDR3TT/tennis-player-roger-federer-of-switzerland-right-and-teammate-yves-allegro-celebrate-during-their-davis-cup-world-group-play-off-double-against-great-britain-in-geneva-switzerland-on-saturday-sept-24-2005-ap-photokeystone-fabrice-coffrini-2PDR3TT.jpg)
Tennis player Roger Federer of Switzerland, right, and teammate Yves Allegro celebrate during their Davis Cup World Group Play-off double against Great Britain in Geneva, Switzerland, on Saturday, Sept. 24, 2005. (AP
![Switzerland's Yves Allegro tries to return the ball as his teammate Michael Kohlmann, right, of Germany looks on during their doubles final at the Heineken Open tennis tournament in Auckland, New Zealand, Switzerland's Yves Allegro tries to return the ball as his teammate Michael Kohlmann, right, of Germany looks on during their doubles final at the Heineken Open tennis tournament in Auckland, New Zealand,](https://c8.alamy.com/comp/2PEFHBG/switzerlands-yves-allegro-tries-to-return-the-ball-as-his-teammate-michael-kohlmann-right-of-germany-looks-on-during-their-doubles-final-at-the-heineken-open-tennis-tournament-in-auckland-new-zealand-saturday-jan-15-2005-the-pair-beat-swedens-simon-aspelin-and-australias-todd-perry-6-4-7-6-4-in-the-final-match-ap-photofotopress-michael-bradley-credit-mandatory-2PEFHBG.jpg)
Switzerland's Yves Allegro tries to return the ball as his teammate Michael Kohlmann, right, of Germany looks on during their doubles final at the Heineken Open tennis tournament in Auckland, New Zealand,
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![ATP World Number One, Switzerland's Roger Federer, right, returns a ball as teammate Yves Allegro, left, looks on during their doubles match of the Davis Cup tennis first round encounter in Bucharest, ATP World Number One, Switzerland's Roger Federer, right, returns a ball as teammate Yves Allegro, left, looks on during their doubles match of the Davis Cup tennis first round encounter in Bucharest,](https://c8.alamy.com/comp/2PF2CMP/atp-world-number-one-switzerlands-roger-federer-right-returns-a-ball-as-teammate-yves-allegro-left-looks-on-during-their-doubles-match-of-the-davis-cup-tennis-first-round-encounter-in-bucharest-romania-saturday-feb-7-2004-ap-photovadim-ghirda-2PF2CMP.jpg)