Mahesh Bhupathi and Rohan Bopanna won their grudge match with India's Leander Paes and his Czech partner Radek Stepanek as the Indian pair reached the final of the ATP Tour Finals with a 4-6, 6-1, 12/10 victory at London's O2 Arena on Sunday.
The semi-final showdown always promised to be a bitter battle after Bhupathi refused to be partnered with Paes at the London Olympics earlier this year, causing an ugly rift that caused several months of chaos in Indian tennis.
Bhupathi and Paes had a successful doubles partnership for several years, but split up when their relationship deteriorated.
Paes and Stepanek defeated Bhupathi and Bopanna in the final of the Shanghai Masters earlier this year in the rivals' first meeting since the Olympics, so this was an especially sweet moment of revenge for the Indian pair.
In Monday's final, they will play the winners of the other semi-final between Spanish duo Marcel Granollers and Marc Lopez and Wimbledon doubles champions Jonathan Marray and and Frederik Nielsen.
Djokovic through to final in three
Novak Djokovic cut giant Argentine Juan Martin del Potro down to size as the world number one battled into the final of the ATP Tour Finals with a 4-6, 6-3, 6-2 victory on Sunday.
Djokovic will play defending champion Roger Federer or third seed Andy Murray in Monday's final after coming from a set and a break down to topple the 6ft 6in former US Open champion in a gruelling semi-final clash lasting two hours and 11 minutes at London's O2 Arena.