(CNN) If you're Novak Djokovic you might be hoping that 2015 never ends.

After winning three of this year's grand slams and securing his 57th career singles title in Shanghai on Sunday, Djokovic became the first player in professional tennis to surpass $16 million in prize money in a season, according to the ATP World Tour.

The 28-year-old Serb, who has 10 grand slams under his belt, took just 78 minutes to defeat Jo-Wilfred Tsonga 6-2 6-4 in the Shanghai Masters final.

Rafael Nadal held the previous prize money record in a season -- $14.5m in 2013 -- but playing the most dominant tennis of his career, Djokovic has easily surpassed that figure.

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He's also unbeaten in his last 17 matches and has won 22 sets in a row.

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