Third seed Taylor Fritz defeated former champion Cristian Garin, 6-3, 6-4, to reach his first career clay court final at the BMW Open.
American Fritz faced no break point while breaking Chile's Garin once in each set en route to a semi-final victory in 1 hour 21 minutes.
The 2019 winner Garin had upset twice Munich champion and top seed Alexander Zverev the previous day but ran out of luck against Fritz who won a first clay-court semi-final in his seventh attempt.
In Sunday's final, Fritz will be bidding for his second title of the year and eighth overall against two-time reigning champion Holger Rune of Denmark or Germany's Jan-Lennard Struff.
Struff earlier in the day completed a 7-5, 6-4 victory over Canadian Felix Auger-Aliassime, after that match was stopped due to darkness the previous day with Struff 3-1 up in the second set.