Zverev lost his serve only once while beating Fabian Marozsan of Hungary 7-6 (3), 6-3 in the semifinals. Marozsan made 28 unforced errors.
Shelton overcame fifth-seeded Francisco Cerundolo 2-6, 7-6 (7), 6-4 from a break down in the final set. Shelton also was two points from defeat twice in the tiebreak.
He has reached his fourth career final and second on clay after winning in Houston last year. (AP) AM AM AM
