Zamalek were held to a disappointing 0-0 draw by their visitors Mazembe in a crucial CAF Champions League Group A game in Alexandria. Following three straight defeats by the DR Congo giants, Zamalek failed to get their revenge after missing several chances. Striker Ahmed Ali had a torrid night as he wasted a first-half penalty before shockingly missing the target from close range near the end. Zamalek remain bottom of the group with four points from as many games, while Mazembe share top spot with local rivals Vita Club on seven points. The Whites handed debuts for three players as summer signings Khaled Kamar, Ahmed Dweidar and Mohamed Koffi all started. VIDEOS First chance sees Mostafa Fathi denied by the bar early on. Ali wins a penalty but blasts into the hands of veteran keeper Robert Kidiaba. Big moment of controversy as Khaled Kamar's header seems to have crossed the line before being parried by Kidiaba. The miss of the game from Ali, whose free header goes wide from two yards.