Former Ghana U17 striker Issah Abass played his first Bundesliga match for Mainz 05 in Saturday's 0-0 draw with Hertha Berlin.
The 20-year-old enjoyed the last eight minutes of action when he replaced Jean-Philippe Mateta at the OPEL ARENA.
Abass joined Mainz 05 on a five year deal on the summer transfer deadline day.
Last month, he made his debut for the club by coming on as a substitute in the 60th minute to help Mainz defeat TuS Koblenz 2-0 in a friendly.