Former world number one Novak Djokovic became the first player to win all nine Masters 1,000 tournaments with victory over Roger Federer in Cincinnati.

The 31-year-old Serb, a five-time runner-up at the event, beat seven-time champion Federer 6-4 6-4.

Wimbledon champion Djokovic had lost the Cincinnati final to the Swiss on three previous occasions.

“It’s a very special moment,” he said. “It’s the first time I get to stand with a winning trophy in Cincinnati.”

Victory for world number two Federer would have brought him his 99th career trophy, as well as levelling the long-time rivals’ head-to-head record at 23-23.

Djokovic will now look to take his form into the US Open, which starts on 27 August, having previously won two titles at Flushing Meadows.

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Federer was under pressure from the start, saving two break points before holding to win the first game.

World number 10 Djokovic eventually broke his opponent’s serve for 4-3 before holding to win the opening set.

But Federer started the second set the strongest, racing into a 2-0 lead before Djokovic fought back to level at 2-2.

He earned another decisive break at 4-3 before serving for victory on his first championship point in one hour and 24 minutes to complete a career ‘Golden Masters’.

Federer said: “Congratulations to Novak for your amazing effort not just this week, but throughout your whole career, it is an amazing achievement.

“It’s been a great week, tough on the players but we had a fun time.”

Earlier, Kiki Bertens held off a championship point to upset world number one Simona Halep in the WTA tournament.