Federer defeated Nadal 6-4 6-3 in the final of the Shanghai Masters.
Rafael Nadal remained in the number one spot in the men's Association of Tennis Professionals (ATP) singles rankings released on Monday. Nadal, 16-time Grand Slam champion, maintained the top spot, ahead of Switzerland's Roger Federer.
There were no changes in this week's standings as Britain's Andy Murray came in third, followed by fourth-placed Marin Cilic of Croatia. Germany's Alexander Zverev was in fifth place.
However, the biggest question remains whether Roger Federer could still finish the year as the top tennis player in the world. Currently, Federer has 8,505 points and trails Nadal who has 10,465 points.
Last Sunday, Federer defeated Nadal 6-4 6-3 in the final of the Shanghai Masters. It was Federer's fifth win in a row over the Spaniard.
Nadal recently announced he would skip the Swiss Indoors in Basel from October 23 to 29 due to a knee injury. Federer could pick up 500 points in Basel and another 1,000 points from the Rolex Paris Masters to be played from October 30 to November 5.
The Nitto ATP Finals will take place from November 12 to 19. An undefeated champion could earn maximum 1,500 points there.
It has been a fantastic year for both Nadal and Federer, who have each won six titles and two Grand Slams in 2017.
The current ATP rankings and point scores are:
1. Rafael Nadal (Spain) 10,465 points
2. Roger Federer (Switzerland) 8,505
3. Andy Murray (UK) 5,290
4. Marin Cilic (Croatia) 4,505
5. Alexander Zverev (Germany) 4,400
6. Dominic Thiem (Austria) 3,935
7. Novak Djokovic (Serbia) 3,765
8. Grigor Dimitrov (Bulgaria) 3,650
9. Stan Wawrinka (Switzerland) 3,450
10. David Goffin (Belgium) 2,840
Meanwhile, Romanian Simona Halep maintained the top spot of the Women's Tennis Association (WTA) singles rankings as Kristina Mladenovic of France joined the top-10 list. The 26-year-old Romanian star was followed by Spaniard Garbine Muguruza.
Czech Karolina Pliskova is third, ahead of fourth-placed Ukrainian Elina Svitolina. France's Caroline Garcia and Briton Johanna Konta jumped one spot each to hold the eighth and ninth positions respectively.
Mladenovic jumped three positions to occupy the 10th spot, while Russia's Svetlana Kuznetsova dropped enough to leave the Top 10 list.
The current WTA rankings and point scores are:
1. Simona Halep (Romania) 5,675 points
2. Garbine Muguruza (Spain) 5,635
3. Karolina Pliskova (Czech Republic) 5,105
4. Elina Svitolina (Ukraine) 5,000
5. Venus Williams (US) 4,642
6. Caroline Wozniacki (Denmark) 4,640
7. Jelena Ostapenko (Latvia) 4,510
8. Caroline Garcia (France) 3,795
9. Johanna Konta (Britain) 3,610
10. Kristina Mladenovic (France) 2,885
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