Djokovic, second in the world rankings, lost his serve once on the day and won 68 percent of the points when serving during his decisive 6-3, 6-4 win over Nadal. It extended his personal winning streak to 22 matches.
Djokovic jumped out to a 3-0 lead -- losing only four points in those games. Nadal evened the set in the fifth game but had a pair of double faults in the eighth game, including one that put Djokovic at breakpoint. Djokovic cashed it in with a forehand winner.
Djokovic blasted out to a 0-40 lead in the third game of the second set. While Nadal held two break points, he couldn't handle a third, sending a forehand long. Djokovic quickly consolidated the break by holding serve at love for a 3-1 lead.
Nadal made Djokovic work for the final game, however. Djokovic won the first two points, only to have Nadal tie the score. After they traded points to get to 40-40, Djokovic fired off his sixth ace of the day and Nadal sent a forehand wide to Djokovic's right to end the match.
It was the 39th time the two had met. Six of those matches came this year with each winning three times: Djokovic won the Monte Carlo Masters finals and the title match in Beijing before adding Monday's win in London; Nadal took title matches at the French Open and the U.S. Open and a semifinal win at the Masters tournament in Montreal. Nadal owns a 22-17 edge in the overall series.