Paris - Roger Federer's victory in the Australian Open has taken him to within 155 points of world number one Rafael Nadal in the ATP rankings released on Monday.
Nadal, who was knocked out in the quarter-finals in Melbourne, has 9 760 points with Federer on 9 605.
Marin Cilic, who took Federer to five sets in the final, moves up three places to a career-high ranking of third.
Chung Hyeon is rewarded for his surprise run to the semi-finals with a 29-place leap to 29th in the world.
Top 20 in the latest ATP Tour rankings:
1. Rafael Nadal (ESP) 9 760 points
2. Roger Federer (SUI) 9 605
3. Marin Cilic (CRO) 4 960
4. Grigor Dimitrov (BUL) 4 630
5. Alexander Zverev (GER) 4 610
6. Dominic Thiem (AUT) 4 060
7. David Goffin (BEL) 3 460
8. Jack Sock (USA) 2 880
9. Juan Martin Del Potro (ARG) 2 815
10. Pablo Carreno Busta (ESP) 2 705
11. Kevin Anderson (RSA) 2 620
12. Sam Querrey (USA) 2 490
13. Novak Djokovic (SRB) 2 470
14. Nick Kyrgios (AUS) 2 395
15. Stan Wawrinka (SUI) 2 385
16. Tomas Berdych (CZE) 2 320
17. Lucas Pouille (FRA) 2 235
18. John Isner (USA) 2 230
19. Jo-Wilfried Tsonga (FRA) 2 050
20. Andy Murray (GBR) 1 960
Selected:
26. Kyle Edmund (GBR) 1 667
29. Chung Hyeon (KOR) 1 472