Daniil Medvedev will tackle Denis Shapovalov for the Vienna Open title after the pair came through their semi-finals in straight sets.
Top seed Medvedev was exceptional against Grigor Dimitrov in Saturday's semi-final, with the Russian's serve proving especially important in his 6-4 6-2 win.
Medvedev won 87 per cent of points on his first serve to leave the Bulgarian frequently struggling for momentum, with Russia's former world world No.1 recognising that impact.
"The serve is probably the most important shot in tennis," he said.
"I was lacking it a little bit this season, I was doing too many double faults.
"Sometimes in important moments my serve could have been a little bit better. I was working a lot with my coach to try and find this rhythm again, and so far I'm serving good here.
"I'm really happy about it, and that's also why I'm playing so good."
Canadian Shapovalov romped to an impressive win over Borna Coric in the other last-four contest.
A tight first set was followed by the Croatian getting 'bagelled' as Shapovalov won 7-6 (7-4) 6-0 to reach his second final of the year.