Djokovic, Federer, Roddick Miami winners

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MIAMI, March 24 (UPI) -- Defending champion Novak Djokovic notched a win Saturday, while Roger Federer and Andy Roddick set up a third-round meeting at the Sony Ericsson Open.

Djokovic, who won in Miami last year and in 2007, cruised into the third round with 6-4, 6-4 win over Cypriot Marcos Baghdatis.

Meanwhile, two-time Miami champ Federer survived a second-set tiebreaker and advanced by downing American wild card Ryan Harrison 6-2, 7-6 (7-3).

With the win, the Swiss former world No. 1 moved on to face Roddick. The American fired 10 aces Saturday while breezing past Luxembourger Gillies Muller 6-3, 6-2 in 73 minutes.

Also Saturday, fifth-seeded David Ferrer of Spain got past Australia's Bernard Tomic 6-4, 6-4, and No. 14 seed Gael Monfils of France bested Ukrainian qualifier Sergei Bubka 6-4, 6-4.

No. 8 seed Mardy Fish of the United States prevailed over Canadian Frank Dancevic 6-3, 7-6 (7-1), while No. 11 Juan Martin Del Potro of Argentina downed Croatia's Ivo Karlovic 7-5, 6-4.

Among the other winners at Miami Saturday were Albert Ramos of Spain, France's Richard Gasquet, Spaniard Fernando Verdasco, Argentina's Juan Monaco, Viktor Troicki of Serbia and Frenchman Julien Benneteau.