World No 14 Janko Tipsarevic defeated defending champion Viktor Troicki in straight sets to win the Kremlin Cup in Moscow and claim his second title of the season.
The 27-year-old won 6-4 6-2 against his fellow Serb and the new year-to-date No 10 now has his sights set on qualifying for next month's World Tennis Finals in London.
He said: "It was really tough. We were both tight. You could cut the tension with a knife. It was like a nightmare to play against your friend."
"Even if I say I don't want to think about London, I knew it was a big opportunity for me," Tipsarevic admitted.
"Every single point counts for London now. It is going to be really hard but not impossible. If I don't qualify for London, then my next goal would be to finish in the top 10."
Troicki was gracious in defeat, admitting his opponent had been a worthy winner.
He said: "Janko deserved to win, he was the better player today. We both played pretty good but he was more aggressive."