![Switzerland's Roger Federer serves during his match against Belgium's Olivier Rochus at the Swiss Indoors ATP tennis tournament in Basel November 2, 2009. REUTERS/Christian Hartmann (SWITZERLAND SPORT TENNIS Stock Photo - Alamy Switzerland's Roger Federer serves during his match against Belgium's Olivier Rochus at the Swiss Indoors ATP tennis tournament in Basel November 2, 2009. REUTERS/Christian Hartmann (SWITZERLAND SPORT TENNIS Stock Photo - Alamy](https://c8.alamy.com/comp/2E782GR/switzerlands-roger-federer-serves-during-his-match-against-belgiums-olivier-rochus-at-the-swiss-indoors-atp-tennis-tournament-in-basel-november-2-2009-reuterschristian-hartmann-switzerland-sport-tennis-2E782GR.jpg)
Switzerland's Roger Federer serves during his match against Belgium's Olivier Rochus at the Swiss Indoors ATP tennis tournament in Basel November 2, 2009. REUTERS/Christian Hartmann (SWITZERLAND SPORT TENNIS Stock Photo - Alamy
![Ivo Karlovic of Croatia prepares to return the ball to Switzerland's Roger Federer during their semi-final match at the Swiss Indoors ATP tennis tournament in Basel October 25, 2014. REUTERS/Arnd Wiegmann (SWITZERLAND - Ivo Karlovic of Croatia prepares to return the ball to Switzerland's Roger Federer during their semi-final match at the Swiss Indoors ATP tennis tournament in Basel October 25, 2014. REUTERS/Arnd Wiegmann (SWITZERLAND -](https://c8.alamy.com/comp/2CMCMW2/ivo-karlovic-of-croatia-prepares-to-return-the-ball-to-switzerlands-roger-federer-during-their-semi-final-match-at-the-swiss-indoors-atp-tennis-tournament-in-basel-october-25-2014-reutersarnd-wiegmann-switzerland-tags-sport-tennis-2CMCMW2.jpg)
Ivo Karlovic of Croatia prepares to return the ball to Switzerland's Roger Federer during their semi-final match at the Swiss Indoors ATP tennis tournament in Basel October 25, 2014. REUTERS/Arnd Wiegmann (SWITZERLAND -
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Hot Shots: Rafael Nadal returns in Madrid; Roger Federer eyes Basel - Official Site of the 2022 US Open Tennis Championships - A USTA Event
![Switzerland's Roger Federer hits a forehand to Spain's David Ferrer during their quarterfinals at the Swiss Indoors tennis tournament in Basel October 27, 2006. REUTERS/Siggi Bucher (SWITZERLAND Stock Photo - Alamy Switzerland's Roger Federer hits a forehand to Spain's David Ferrer during their quarterfinals at the Swiss Indoors tennis tournament in Basel October 27, 2006. REUTERS/Siggi Bucher (SWITZERLAND Stock Photo - Alamy](https://c8.alamy.com/comp/2E6PMH2/switzerlands-roger-federer-hits-a-forehand-to-spains-david-ferrer-during-their-quarterfinals-at-the-swiss-indoors-tennis-tournament-in-basel-october-27-2006-reuterssiggi-bucher-switzerland-2E6PMH2.jpg)