MIAMI, March 27 (UPI) -- Top-ranked Roger Federer was defeated again by Guillermo Canas Tuesday at the $3.45 million Sony Ericsson Open.
Canas, who beat Federer at Indian Wells earlier this month, defeated the Swiss 7-6 (7-2), 2-6, 7-6 (7-5) to advance to the quarterfinals.
The reigning Australian Open, Wimbledon and U.S. Open champion Federer was the two-time defending Miami champ.
Former world No. 1 Andy Roddick advanced Tuesday to the quarterfinals. American Roddick, last year's U.S. Open runner-up, defeated Spaniard David Ferrer 7-5, 6-3.
Englishman Andy Murray, Roddick's next opponent, beat Frenchman Paul-Henri Mathieu 2-6, 7-5, 6-3. The 19-year-old Murray has won 15 of his last 17 matches, including a title in San Jose last month.
Spaniard Tommy Robredo reached the round of eight with a 7-6 (7-4), 5-7, 7-6 (7-3) victory over Czech Radek Stepanek.
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