Novak Djokovic capped off a phenomenal autumn by defending his ATP World Tour Finals title with an impressive 6-3, 6-4 win over Rafael Nadal in a duel between the two dominant players of the season on Monday night.

There's no doubt Djokovic is the man to beat on indoor hard courts. And just for the record, his 22 consecutive wins to finish 2013 matched top-ranked Nadal's best stretch of the year.

Djokovic's winning run started after a U.S. Open final defeat to Nadal, and during a span when the Spaniad replaced him atop the rankings.

His victory in London denied Nadal the only big trophy missing from his glittering CV.

Having produced one of the most memorable comebacks in tennis, Nadal lost in a deciding match for the second time at the tour finals and missed the chance to join Andre Agassi as the only players to have won all four Grand Slams, Olympic gold, the Davis Cup and the year-end tournament.

Djokovic has now beaten Nadal 10 times in 19 finals and is unbeaten since losing at the U.S. Open in September.

There's no doubt Djokovic is the man to beat on indoor hard courts. And just for the record, his 22 consecutive wins to finish 2013 matched top-ranked Nadal's best stretch of the year.

Djokovic's winning run started after a U.S. Open final defeat to Nadal, and during a span when the Spaniad replaced him atop the rankings.

His victory in London denied Nadal the only big trophy missing from his glittering CV.

Having produced one of the most memorable comebacks in tennis, Nadal lost in a deciding match for the second time at the tour finals and missed the chance to join Andre Agassi as the only players to have won all four Grand Slams, Olympic gold, the Davis Cup and the year-end tournament.

Djokovic has now beaten Nadal 10 times in 19 finals and is unbeaten since losing at the U.S. Open in September.