Andrej Rubljow or Ugo Humbert can vote for the successor of Roger Federer at the lawn tennis tournament in Halle, Westphalia.
Two years after the top star won the tenth title in the hall, the Russian top ten player and the French outsider will contest the surprise final on Sunday.
Rublev, seeded in fourth place, prevailed on Saturday in the semi-finals against Georgian Nikolos Bassilashvili 6: 1, 3: 6, 6: 3.
The unset Humbert then wrestled Felix Auger-Aliassime from Canada 6: 4, 3: 6, 7: 6 (7: 5).
The world number 31.
After winning the first set, Humbert already led with a break in the second set, but then had to go into the decisive third round.
There he already missed the first two match points at 5: 4 before using his fifth match point after 2:33 hours in the tie-break.
Last week in Stuttgart, the 22-year-old Humbert had just lost to the eventual finalist Auger-Aliassime.
Rublev, who was a year older than him, clearly dominated his semi-final against Bassilashvili.
Bassilashvili only made the game more balanced after he had treated his right leg at 1: 5 in the first set.
The world number seven Rublev is the favorite in the final.
Apart from him, all seeded players were eliminated early.
In the quarter-finals, the Russian was too strong for Philipp Kohlschreiber as the last German participant.
The German number one Alexander Zverev had lost in the round of 16 against Humbert.
The Halle record winner Federer was surprisingly eliminated against Auger-Aliassime and had to accept a setback in preparation for Wimbledon.
Belinda Bencic from Switzerland and the qualifier Ludmilla Samsonowa from Russia will contest the final of the lawn tennis tournament in Berlin on Sunday.
The 24-year-old Bencic prevailed in the first semi-final 7: 5, 6: 4 against Alizé Cornet from France.
Samsonowa defeated the former world number one Viktoria Azarenka from Belarus in just 65 minutes 6: 4, 6: 2.
Samsonova, who is in 106th place in the world rankings, gave the favorite no chance and moved into her first WTA tournament final.
“It's unbelievable, I can't believe what I've achieved.
I've always dreamed of playing a tournament like this, ”said the 22-year-old.
Especially Samsonowa's hard impacts of consistently 180 to 190 km / h left their mark on Azarenka.
Now the whiz kid is looking forward to the final.
“I never played against Belinda.
That's going to be hard.
I'll try my best again, ”said the Russian.
Bencic, on the other hand, struggled with her performance despite her victory.
“In the second movement I totally lost my rhythm, but still won.
I always tend to play drama on the pitch, "said number five on the seeding list with a wink:" That doesn't suit me, but I think the audience likes it. "
When the world number twelfth became more courageous, Cornet could no longer counter. “There are always long rallies against Alizé, she likes that. So I had to be more aggressive and offensive than them, that was the difference today, ”said Bencic. She can get her fifth title on the WTA tour on Sunday.