Novak Djokovic defeated Roger Federer at the Paris Masters semi-final as he described "one of the best games" between long-term players to increase his success in 22 games.
Rafael Nadal will be the world number on Monday, and is out of Federer three hours to win 7-6 (8/6), 5-7, 7-6 (7/3).
He will meet Russian Prime Minister Karen Khachanov at the end of Sunday, considering the Nadal's 33 Masters Certificates.
Djokovic has won the last four encounters with Federer and is currently leading the Swiss championship to 25-22, without losing the 20-time Grand Slam since 2015.
"We have a number of games in our competition, but this is one of the best games we have played," said Djokovic, who wants to win the fourth consecutive league title after winning the Cincinnati, the US Open and Shanghai.
"I played high quality Nadal in the Wimbledon semi-final, this is the most interesting game I've played this year, and probably the best quality tickets I've ever played.
"When I play Roger, I know I need to benefit from it and get it to win, because that's our competition and our club is unique."
Djokovic will seek the fifth edition of Paris, after refusing to award Federer a 100th birthday card, although Wimbledon and the US Open Open have pushed the 37-year-old forward.
Djokovic watched four yellow cards, one of which Federer saved the wonderful goal of the game when he gave the 4-3 lead.
Goalkeeper Federico Djambovic picked up the challenge, despite having two more points over Serb, the first time they played in Switzerland.
The best chance of the game was much more valuable when Federer scored only two points in the 6-5 win, replacing Djokovic, who left the court after failing to score the goal give it to you.
Federer turned two more points to open the third and Djokovic struck the ball when his ankle appeared to have climbed to the top.
Serb's penalty hit when Federer again escaped from 15-40 to move to 5-4, but the Swiss star's recent performances ujoogay last starts of the season.
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Djokovic leads the six-point lead over five-point lead, winning the third successive victory at Federer's goal to end the uprising.
"Novak is clear, you have to feel, at the end it fell a little bit here," Federer said.
"But overall, I'm happy with my players, it's better than Basel last week, where I won the competition, I played with semis, and needed someone from Novak to beat.
"That's the reality, I hope to relax and prepare for a good London (ATP Finals)."
Khachanov, 22, has won the Masters final for the first time since beating Australia's sixth-placed Dominic Thiem 6-4, 6-1.
"I am very happy to win the trophy so that I reach the final, but the game is not over, I hope to hopefully play tomorrow," said the 18-year-old Russian.
1.98m Khachanov is from the basement and attacked the Thiem service, breaking the Australian match in his last five games.
Khachanov won two ATP World Tour titles with the 2018 winner of Marseille and the Kremlin Cup.
"I am very happy with my style of play," said Russian confirming at least 12 points above the ATP scan on Monday.