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US player Brian Baker plays a forehand shot during his fourth round men's singles defeat to Germany's Philipp Kohlschreiber on day eight of the 2012 Wimbledon Championships tennis tournament at the All England Tennis Club in Wimbledon, southwest London, on July 3, 2012. AFP PHOTO / ANDREW YATES RESTRICTED TO EDITORIAL USE (Photo credit should read ANDREW YATES/AFP/GettyImages)

US player Brian Baker plays a forehand shot during his fourth round men's singles defeat to Germany's Philipp Kohlschreiber on day eight of the 2012 Wimbledon Championships tennis tournament at the All England Tennis Club in Wimbledon, southwest London, on July 3, 2012. AFP PHOTO / ANDREW YATES     RESTRICTED TO EDITORIAL USE        (Photo credit should read ANDREW YATES/AFP/GettyImages)