Djokovic captures ATP Finals, again

London, England ( - Novak Djokovic straight-setted Rafael Nadal in Monday's blockbuster final to capture his second straight and third overall title at the season-ending ATP World Tour Finals.

The second-seeded former world No. 1 Djokovic upended the top-ranked Nadal 6-3, 6-4 in 1 hour, 36 minutes at The O2 in London.

The U.S. and French Open champion Nadal saved a pair of match points, trailing 3-5 and 4-5 in the second set, but the Australian Open titlist Djokovic converted on a third when Nadal fired wide on one final forehand.

The Serbian star was in control throughout, as he popped six aces, while Nadal committed four double faults, and Djokovic broke Nadal three times, while Nadal settled for only one break in only three break-point chances.

The 27-year-old Nadal, who led the ATP with 10 titles this season, has never titled at this prestigious year-end tournament.

Djokovic capped his 2013 season with 22 straight match wins and four titles. His last loss came against Nadal in September's U.S. Open finale.

Djokovic now owns 41 career titles, which included seven in 2013.

The 26-year-old Djokovic improved to 17-22 lifetime against his great rival Nadal, including 10-9 in finals. The two stars hold the ATP record for most matches played in the Open Era (39) and split six encounters this year.

Djokovic, who will lead Serbia against the visiting and reigning champion Czech Republic in this week's Davis Cup final in Belgrade, claimed $1.9 million as an undefeated champion in London, while Nadal earned just over $1 million.