The 24-time Grand Slam champion Novak Djokovic continued to rack up records on the ATP Tour as he began the week 419 as World No.1 extending his huge record. He also will become the oldest World No.1 ever this Sunday. The Serbian will surpass Roger Federer's record as the oldest No. 1 in ATP Rankings history on Sunday when he will be 36 years and 321 days old. Djokovic, one of the greatest players of all time, has proven near-unrivalled longevity at the pinnacle of his sport even as he enters his fourth decade. Since turning 30 on May 22, 2017, the Serbian has won 31 tour-level titles, including 12 of his 24 Grand Slams, 10 of his 40 ATP Masters 1000 victories, and two of his seven ATP Finals triumphs.