Goerges is based in Regensburg, an hour south of Nürnberg, but to the dismay of the crowd Bertens had not read the script, holding her nerve to win, 3-6, 6-4, 7-6(4).
"I feel good, I feel happy, it was a really tough match today and a good fight," Bertens said. "She played really good, I think I was a little bit unlucky when I got broken at the start. But my coach told me to mix it up a little bit and I think this worked really well today."
Bertens has been in fine form all week, coming through qualifying then knocking out top seed Roberta Vinci to register her first ever Top 10 win. "I think I've been playing well all season. I'm going up in the rankings again and when you get your first Top 10 win it's always very nice."
There was more disappointment for the home nation in the second semifinal as Mariana Duque-Mariño completed a long day by upsetting No.3 seed Annika Beck, 7-5, 6-1. Earlier on, Duque-Mariño fought back to win her rain-delayed quarterfinal with Varvara Lepchenko, 5-7, 7-6(4), 7-5, in a match lasting eight minutes shy of three hours.
Duque-Mariño's only other final came in Bogotá six years ago. "I'm very happy because all these players have been playing really well and I've been waiting for this final for a very long time," Duque-Mariño said.
"I think the physios did great things during the break, I had a little bit of massage and rested so I could be ready for the next one."