Kohlschreiber dropped his serve just once in a 6-7 (6-8), 6-2, 6-2 semifinal victory Friday over Filippo Volandri. He won nearly three-quarters of the points on serve and advanced by posting a pair of breaks in each of the second and third sets.
Haase, the No. 3 seed, also had two breaks in each set of a 6-3, 6-3 win over fifth-seeded Martin Klizan. Haase won 60 percent of the total points.
Saturday's championship match will mark the first ATP meeting between Kohlschreiber and Haase. Last year's title in Kitzbuhel is the only ATP championship for Haase. It is also the only tournament final he's appeared in.
Kohlschreiber will be seeking his fifth title. He improved to 4-2 lifetime in finals by winning the championship in Munich in April.