(Reuters) - Top-seeded Serbian Novak Djokovic beat Frenchman Jo-Wilfried Tsonga 7-6 6-2 on Sunday to win his third China Open tennis title in Beijing.

World number two Djokovic dug deep in the first set after an early trade of breaks to win a close tie-breaker and then broke the third-seeded Tsonga twice in the second set.

Sunday's victory gave Djokovic, who also won the China Open in 2009 and 2010, his fourth title of the year.

Earlier, Mike Bryan overtook Australian Todd Woodbridge's mark of 83 career doubles titles when he, along with brother Bob, beat Carlos Berlocq and Denis Istomin 6-3 6-2 for their third China Open title in four years.

It was the seventh title of the year for the American pair.

(Writing by Sudipto Ganguly in Mumbai; Editing by Clare Fallon)