Roger Federer secured Switzerland's spot in next year's Davis Cup World Group with a 6-3, 6-0, 6-4 win over Italy's Potito Starace in a rain-affected match in Genoa on Sunday.
His commanding victory, peppered with effortless winners from the baseline, gave the Swiss team an unassailable 3-1 lead in the World Group playoff.
The world number one looked comfortable back on clay following his first French Open title in June, coping well with light drizzle in the first set and a long rain delay at 4-0 in the second.
Federer lost the US Open final to Juan Martin Del Potro on Monday before flying back to Europe and beating Simone Bolelli 6-3, 6-4, 6-1 in Friday's second singles rubber, putting the visitors 2-0 up.
He was rested for Saturday's doubles match won by Italy but came back refreshed to polish off Potito, who had won all of his previous 10 Davis Cup singles.
