Andy Murray remained atop the latest ATP rankings released on Monday, with Doha winner Novak Djokovic in second.
France’s Gael Monfils, without even playing, jumped one place to equalise his best ever rank.
Monfils benefited from Croat Marian Cilic’s second-round defeat in the Chennai Open.
Recent tournament winners Roberto Bautista of Spain and Bulgarian Grigor Dimitrov both go up, to 13 and 15th respectively.

ATP rankings as of January 9
1. Andy Murray (GBR) 12560 pts
2. Novak Djokovic (SRB) 11780
3. Milos Raonic (CAN) 5290
4. Stan Wawrinka (SUI) 5155
5. Kei Nishikori (JPN) 5010
6. Gael Monfils (FRA) 3625 (+1)
7. Marin Cilic (CRO) 3605 (-1)
8. Dominic Thiem (AUT) 3415
9. Rafael Nadal (ESP) 3195
10. Tomas Berdych (CZE) 3060
11. David Goffin (BEL) 2750
12. Jo-Wilfried Tsonga (FRA) 2595
13. Roberto Bautista (ESP) 2510 (+1)
14. Nick Kyrgios (AUS) 2460 (-1)
15. Grigor Dimitrov (BUL) 2195 (+2)
16. Lucas Pouille (FRA) 2131(-1)
17. Roger Federer (SUI) 1980 (-1)
18. Richard Gasquet (FRA) 1885
19. John Isner (USA) 1850
20. Ivo Karlovic (CRO) 1795