Roger Federer lost only three points on his serve, beating Ivo Karlovic 6-4, 7-6 (4) in Miami.
Clive Brunskill/Getty Images

KEY BISCAYNE, Fla. (AP) - Roger Federer earned the only break of the match in the opening game, lost just three points on his serve and beat Ivo Karlovic 6-4, 7-6 (4) Friday at the Sony Open.

It was the first match at Key Biscayne in two years for Federer, who took a spring layoff in 2013.

The 32-year-old Federer has looked rejuvenated and climbed to No. 5 in the rankings this week. While he had trouble with Karlovic's big serves, the 6-foot-11 Croat had no chance when returning serve.

Federer won 49 of his 52 service points. In a match with few rallies, he committed just three unforced errors.

The longest point was the last one. When Karlovic pushed a backhand into the net on the 10th stroke, Federer hopped happily in celebration and threw a fist.

Copyright 2014 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

SI Apps
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide - from Peter King, Tom Verducci, Lee Jenkins, Seth Davis, and more - delivered straight to you, along with up-to-the-minute news and live scores.