MIAMI, March 26 (UPI) -- Roger Federer won and Nikolay Davydenko lost Monday in the $3.45 million Sony Ericsson Open tennis.
Two-time defending champion was a third-round winner, while American qualifier Amer Delic beat world No. 4 Russian Davydenko in straight sets.
The top-seeded/world No. 1 Federer defeated Spaniard Nicolas Almagro 7-5, 6-3 in 1 hour, 21 minutes. The Swiss had nine aces.
Reigning Australian Open, Wimbledon and U.S. Open champion Federer beat Croat Ivan Ljubicic in last year's Miami finale and beat Spaniard Rafael Nadal in the 2005 final.
Delic, 24-year-old native of Bosnia, defeated Davydenko 7-6 (7-5), 6-3 to record the biggest win of his ATP career.
Sixth-seeded Spaniard Tommy Robredo avoided an upset by beating German Florian Mayer 6-4, 6-4. In another upset, Argentine Juan Ignacio Chela beat Czech Tomas Berdych 6-4, 7-6 (8-6).
