Switzerland’s Federer returns a ball during his Davis Cup semi-final tennis match against Italy’s Fognini at the Palexpo in Geneva

Switzerland’s Federer returns a ball during his Davis Cup semi-final tennis match against Italy’s Fognini at the Palexpo in Geneva

Switzerland’s Roger Federer returns a ball during his Davis Cup semi-final tennis match against Italy’s Fabio Fognini at the Palexpo in Geneva September 14, 2014. REUTERS/Denis Balibouse (SWITZERLAND – Tags: SPORT TENNIS)