Al Ahly have submitted an official complaint to the Confederation of African Football (CAF) after their opening defeat to Etoile du Sahel in the African Champions League.
The seven-time champions succumbed to a 1-0 loss to the Tunisian giants under in a controversial Group A opener on Friday evening.
Star defender Ayman Ashraf received his marching orders before the 15th-minute mark after taking down Etoile striker Maher Hannachi just outside the area as he looked skip inside the area.
However, Ahly feels the straight red at the Stade Olympique de Radès was unjustified, as veteran forward Yassine Chikhaoui found the winning goal in the 50th minute.
This after several questionable calls made against the Egyptian Premier League champions in the past couple of continental campaigns.
"The club has filed a complaint to CAF because of the injustice we suffered in the CAF Champions League in the last few years," read a statement on the club's website.
"Especially what happened against Etoile du Sahel in Rades, where the Botswanian referee made a number of mistakes that affected the outcome of the game."
The Red Devils are grouped alongside the Tunisians, FC Platinum of Zimbabwe and Sudanese giants Al Hilal.