Who has 'served' longest as ATP world number 1?

Novak Djokovic, who clinched his 18th Grand Slam after winning the Australian Open last month will surpass Roger Fereder's record of 310 weeks. The Serb is set to break the record for the longest stay in the ATP top spot once he reaches 311 weeks on Monday. Here's a look at the men's tennis stars who 'served' longest at world number 1.

Who has 'served' longest as ATP world number 1?

10 | Lleyton Hewitt (AUS) | 80 weeks | Credit: AFP File Photo

9 | Andre Agassi (USA) | 101 weeks | Credit: AFP File Photo

8 | Bjorn Borg (SWE) | 109 weeks | Credit: Getty Images

7 | John McEnroe (USA) | 170 weeks | Credit: Getty Images

6 | Rafael Nadal (ESP) | 209 weeks | Credit: AFP File Photo

5 | Jimmy Connors (USA) | 268 weeks | Credit: Getty Images

4 | Ivan Lendl (CZE) | 270 weeks | Credit: Getty Images

3 | Pete Sampras (USA) | 286 weeks | Credit: Getty Images

2 | Roger Federer (SUI) | 310 weeks | Credit: Reuters File Photo

1 | Novak Djokovic (SRB) | 311 weeks | Credit: Reuters File Photo