A goal from Musema Ngowa proved to be enough as his side Sanga Balende beat their more fancied opponents Zamalek 1-0 on Sunday in the CAF Confederation Cup.
Musema Ngowa scored his goal in the 13 minute of the match which proved to be the winning goal as the DR Congo side walked out victorious in their home leg of this tie.
Zamalek piled on the pressure after falling behind to try and level the score, but they had three goals from Ahmed Tawfik, Ahmed Ali and Bassem Morsi disallowed by the referee, prompting protests from the Zamalek management.
It was Zamalek's first defeat under Portuguese coach Jesualdo Ferreira, who has guided Zamalek in ten matches in all competitions so far.
"I have never seen such bad refereeing in my life," Zamalek's board member Rehab Abou Regeila told Nile Sports after the game, which was not televised.
"The referee disallowed a legitimate goal from striker Ahmed Ali. The assistant referee ran to the center of the pitch in a sign that the goal is legitimate, but he himself was stunned by the referee's decision."