Borussia Dortmund won the match with six goals against the South African team, Mamelodi Sundowns, valid for Group F in the Club World Cup on Saturday.
The Germans won 4:3 to secure the first three points.
The Africans took the lead through Lucas Ribeiro in the 11th minute before Dortmund came back strongly with three goals in the first half. Felix Nmecha, Serhou Guirassy and Jobe Bellingham, who scored his first goal for Dortmund, were the brothers of Real Madrid star Jude Bellingham.
In the second half, Dortmund extended their lead thanks to Mudau's own goal.
Meanwhile, the Africans came back into the game with two more goals from Iqraam Rayners and Lebo Mothiba, but not enough to earn a point.
In Group F, Dortmund now lead with four points. Mamelodi Sundowns have three in second place. Fluminense have one in third place and Ulsan are last with no points.
