Stanislas Wawrinka followed Roger Federer's straight-sets win with a quick victory on Friday, giving Switzerland a 2-0 lead over Italy in the Davis Cup semifinals.
Wawrinka, the Australia Open champion, beat Italian No. 1 Fabio Fognini 6-2, 6-3, 6-2 in just 90 minutes at the Palexpo indoor arena.
Earlier, Federer beat 76th-ranked Simone Bolelli 7-6 (5), 6-4, 6-4 without dropping serve.
Federer and Wawrinka have a chance on Saturday to clinch a 3-0 series victory and send Switzerland to their first Davis Cup final in 22 years. The Swiss have never won the title.
The 2008 Olympic doubles gold medalists are scheduled to face Italian pair Andreas Seppi and Paolo Lorenzi.
In the other semifinal series, France leads the two-time defending champion Czech Republic 2-0.