Kohlschreiber beat the Romanian 6-3, 6-3 for a berth in Sunday's title match against fifth-seeded Fabio Fognini of Italy.
Fognini spent 58 minutes beating Roberto Bautista Agut of Spain 6-1, 6-3 in the first semi of the day.
Kohlschreiber, who fired two aces and won 75 percent of his first-serve points, will try for his first title of the year against an opponent he has not beaten in two meetings.
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