Top-seeded Gilles Simon beat Matthias Bachinger of Germany 7-5, 6-2 on Saturday to advance to the final of the Nastase Tiriac Trophy.
Simon broke five times to win against the unseeded Bachinger.
The Frenchman, who won the tournament in 2007 and '08, will attempt to clinch a hat-trick of titles when he meets Italy's Fabio Fognini on Sunday.
Fognini reached his first ever ATP World Tour final with a win over 450th-ranked Attila Balazs of Hungary, 6-3, 6-1.
The Italian broke four times and saved three break points to defeat the Hungarian qualifier in about 70 minutes.