Top-ranked Caroline Wozniacki beat Agnieszka Radwanska 7-5, 6-3 to advance to the final of the Porsche Grand Prix on Saturday and a shot at her fourth title of the year.
For the title and the Porsche sports car that goes with it, Wozniacki will play Julia Goerges, who upset last year's runner-up, Sam Stosur, 6-4, 3-6, 7-5 to play for her second career WTA title.
Wozniacki fell behind by a break but rallied with her powerful groundstrokes to overcome Radwanska in the first set.
The Dane needed seven match points over two games to close out the Pole.
''She is a good player, with a lot of tricky shots,'' Wozniacki said.
Goerges blew a 4-2 lead in the final set but broke the fifth-seeded Stosur's serve to win after 2 hours, 16 minutes and become the first German in the Stuttgart final since Anke Huber in 1996.
By reaching the final, Goerges will also break into the top 30 in the world, giving Germany two players ranked that high for the first time since August 1999. The other is Andrea Petkovic.
Goerges rode her big serve to rally past Stosur, whom she also beat in Tokyo last year.
''This is a milestone. It was one of my best career matches. I took risks in the end and had some luck on my side,'' Goerges said.
