Result from the Davis Cup World Group play-off in Genoa on Sunday: Italy 1 Switzerland 3 Roger Federer (SUI) bt Potito Starace (ITA) 6-3, 6-0, 6-4 Still to play: Simone Bolelli (ITA) v Stanislas Wawrinka (SUI) Friday: Stanisla Wawrinka (SUI) bat Andreas Seppi (ITA) 6-4, 6-1, 6-2 Roger Federer (SUI) bat Simone Bolelli (ITA) 6-3, 6-4, 6-1 Saturday: Simone Bolelli/Potito Starace (ITA) bt Marco Chiudinelli/Stanislas Wawrinka (SUI) 6-2, 6-4, 7-6 (7/3) 