Novak Djokovic.

Novak Djokovic marginally increased his points lead at the top of the men's tennis rankings released Monday by the ATP. 
The Serbian remains on 14,040 points but Britain's Andy Murray is down 140 points to 9,345 as number two. US Open winner Stan Wawrinka of Switzerland stays third in an unchanged top 10.    ATP top 10 as of September 19 are as follows: 1. Novak Djokovic, Serbia, 14,040 points. 2. Andy Murray, Britain, 9,345. 3. Stan Wawrinka, Switzerland, 6,260. 4. Rafael Nadal, Spain, 4,940. 5. Kei Nishikori, Japan, 4,875. 6. Milos Raonic, Canada, 4,760. 7. Roger Federer, Switzerland, 3,730. 8. Gael Monfils, France, 3,545. 9. Tomas Berdych, Czech Republic, 3,390. 10. Dominic Thiem, Austria, 3,295.

Source  : QNA