Novak Djokovic is gaining on Roger Federer and Rafael Nadal in the Grand Slam standings, and he's already caught Federer in another significant statistic: As of Monday, Djokovic has been No. 1 in the ATP rankings for a total of 310 weeks.
That equals Federer's career record for most time spent atop the rankings. And no matter what happens over the next week, Djokovic is assured of breaking Federer's mark on March 8.
Pete Sampras is third on the list, with 286 weeks.
Djokovic's Australian Open championship last month gave the 33-year-old from Serbia 18 Grand Slam singles trophies. Only Federer and Nadal, each with 20, have more.