Roger Federer's presence made the difference in the Davis Cup by BNP Paribas World Group Play-off tie in Genoa which Switzerland won 3-2 against Italy. His presence or absence will also influence the Swiss team's chances in the future. The tie between Italy and Switzerland saw two possible scenarios. It would have been fairly even had the Swiss team been without the world No. 1 but once he landed in the Ligurian capital, 32 hours after his loss in the US Open final, it was clear that the visitors would be clear favourites. And the predictions turned out to be correct. Despite being quite tired, Federer found in the tank what was needed to beat Simone Bolleli on Friday and Potito Starace on Sunday, both in straight sets. These wins contributed two points to the Swiss effort with Stanislas Wawrinka notching the other, easily beating a handicapped Andreas Seppi in the first match. To many people it came as a surprise that Federer didn't play the doubles, for only the third time in eleven years. "I really was tired and I have been carrying a leg problem for a week, so I didn't want to increase the risk of injury,” said Federer. Except for the match with Seppi, the Italian players couldn't have too many regrets. Simone Bolelli gave Federer a fight for two sets as did Starace on Sunday, but the difference them and, according to Starace, the "best player of all times" was just too big. Positive signs for the Italians were the nice doubles performance by Bolelli and Starace, who made short work of Wawrinka and Marco Chiudinelli, and Fabio Fognini's victory in the fifth rubber against Michael Lammer.