Fritz beat Germany's world number three Zverev 6-3 7-6 (7-0) in just one hour 27 minutes to win the title at the grass-court tournament in Germany.

German top seed Alexander Zverev took out American third seed Ben Shelton with a 7-6 (8) 7-6 (1) victory in the semi-finals of the Stuttgart Open on Saturday to set up a showdown with Taylor Fritz.