Andy Murray gained some consolation for his straight sets defeat to Novak Djokovic in the Paris Masters final on Sunday by regaining the world number two spot.
The Scot was edged for second place by Roger Federer last week, but his run into the Paris final, coupled with Federer's early loss to John Isner, reversed the positions.
That could be significant for Murray at next week's ATP World Tour Finals in London as he could expect an easier draw for the group stages.
Already the two-time major tournament champion has his end-of-season sights firmly set on Britain's Davis Cup final against Belgium in Ghent from November 27-29.
To that avail, Murray wasted no time Monday in getting some practice in on an indoor claycourt at Queens Club, as that is the surface chosen by the Belgians for the final, which gets underway just five days after the World Tour Finals week.
Britain have not won the Davis cup since 1936 and were last in the final in 1978.
ATP world top 20
1. Novak Djokovic (SRB) 15,285
2. Andy Murray (GBR) 8,470 (+1)
3. Roger Federer (SUI) 7,340 (-1)
4. Stan Wawrinka (SUI) 6,500
5. Rafael Nadal (ESP) 4,630 (+1)
6. Tomas Berdych (CZE) 4,620 (-1)
7. David Ferrer (ESP) 4,305 (+1)
8. Kei Nishikori (JPN) 4,035 (-1)
9. Richard Gasquet (FRA) 2,715
10. Jo-Wilfried Tsonga (FRA) 2,545
11. John Isner (USA) 2,495 (+2)
12. Kevin Anderson (RSA) 2,475
13. Marin Cilic (CRO) 2,405 (-2)
14. Milos Raonic (CAN) 2,170
15. Gilles Simon (FRA) 2,145
16. David Goffin (BEL) 1,805
17. Feliciano Lopez (ESP) 1,690
18. Bernard Tomic (AUS) 1,675
19. Dominic Thiem (AUT) 1,600
20. Benoit Paire (FRA) 1,553 (+3) – AFP