Novak Djokovic announced his withdrawal from the ATP Finals shortly after celebrating his 101st career title victory in ecstatic fashion.

The Serbian legend came from behind to beat Lorenzo Musetti 4-6 6-3 7-5 in the inaugural Hellenic Championship final on Saturday.

Going to be very expensive' - Novak Djokovic outlines retirement plan

Djokovic collapsed on the court once victory was confirmed and then ripped his shirt as he screamed towards the crowd in celebration.

At age 38, the record 24-time Grand Slam champion lifted his 101st men's singles title.

He remains third in the all-time list, which is led by Jimmy Connors on 109 titles and then Roger Federer with 103.

Djokovic also became the oldest player to ever win an ATP title aged 38 years, five months and 17 days.

However, the

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