Paris - Greek 20-year-old Stefanos Tsitsipas broke into the world top 20 on Monday following his giant-killing run at the Toronto Masters.
The beaten finalist, who lost out to world No 1 Rafael Nadal on Sunday, vaulted into 15th place a day after his 20th birthday.
Tsitsipas, ranked 159th in the world one year ago, reached the final after eliminating four seeds along the way - Dominic Thiem, Novak Djokovic, Alexander Zverev and Kevin Anderson.
Latest ATP world rankings:
1. Rafael Nadal (ESP) 10 220
2. Roger Federer (SUI) 6 480
3. Juan Martin Del Potro (ARG) 5 410
4. Alexander Zverev (GER) 4 845
5. Grigor Dimitrov (BUL) 4 700
6. Kevin Anderson (RSA) 4 535
7. Marin Cilic (CRO) 4 085
8. Dominic Thiem (AUT) 3 665
9. John Isner (USA) 3 570
10. Novak Djokovic (SRB) 3 445
11. David Goffin (BEL) 3 085
12. Diego Schwartzman (ARG) 2 380
13. Pablo Carreo (ESP) 2 290
14. Fabio Fognini (ITA) 2 145
15. Stefanos Tsitsipas (GRE) 2 089
16. Kyle Edmund (GBR) 1 950
17. Lucas Pouille (FRA) 1 870
18. Nick Kyrgios (AUS) 1 855
19. Roberto Bautista (ESP) 1 820
20. Jack Sock (USA) 1 815