PERTH, Australia, Dec. 30 (UPI) -- Lleyton Hewitt led Australia to an easy round-robin victory over defending champion Switzerland on Sunday in the Hopman Cup, a mixed team event.
Hewitt, who this year became the youngest player ever to finish a season ranked No. 1, held off Roger Federer, 6-3, 0-6, 6-4, in 1 hour, 40 minutes. The 20-year-old later teamed with Alicia Molik to defeat Federer and Miroslava Vavrinec, 6-3, 6-1, in mixed doubles and complete the 3-0 sweep.
Molik had started things off at Perth's Burswood Dome with a 6-3, 6-4 win over Vavrinec.
Hewitt won an ATP-tying six tournaments last year, including his first Grand Slam crown at the U.S. Open and the season-ending Tennis Masters Cup in Sydney.
Australia is seeded second behind last year's runner-up, the United States, which will take on France on Monday. American Monica Seles will face Virginie Razzano, and her countryman, Jan Michael Gambill, will battle Australian Open finalist Arnaud Clement.
In other Group B action, Spain's Arantxa Sanchez-Vicario, who won the Hopman Cup in 1990 with her brother Emilio, cruised past Paolo Suarez of Argentina, 6-2, 6-3, before Tommy Robredo clinched the tie for Spain with a 4-6, 6-2, 6-3 triumph over Mariano Zabaleta.
Zabaleta was a late replacement for Guillermo Coria, who has been suspended until March by the ATP after testing positive for the banned steroid Nandrolone.