Namibia secured a surprise 18-run victory over South Africa in the opening match of the T20I tri-series, which also features Zimbabwe.
Trumpelmann and Frylinck were instrumental in the win, successfully defending a target of 164 despite a valiant 75-run effort from South Africa's Dewald Brevis.
The result provides Namibia with a strong start in the series, highlighting the growing competitiveness of associate nations in international cricket formats.