Venus and Serena Williams will play each other for the first time in almost three years in the semi-finals of the Bangalore Open on Saturday.
Venus has beaten Serena in their last two meetings
World number seven Venus, 27, beat Vera Zvonareva 6-4 6-3 on Friday before third seed Serena, 26, demolished unseeded Anastasia Rodionova 6-1 6-4.
"(It) would have been nice if we'd met in the final," said Venus.
Top seed Jelena Jankovic suffered a surprise 6-3 3-6 6-3 defeat by China's Yan Zi, who next meets Patty Schnyder.
Fourth seed Schnyder of Switzerland beat Uzbek Akgul Amanmuradova 4-6 6-4 7-6 (7-1).
The Williams sisters are tied at 7-7 in career meetings, with Venus winning their last encounter at the US Open in 2005.
"I am happy that one of us will be in the final," said Venus.
Serena joked: "She is a tough player and the only chance of beating her is when she is injured. I want her leg to be broken.
"Venus is nice to me all the time except when she is on court.
"I am also very competitive and I always want to win. We will have fun tomorrow."