Al Sadd won their Champions League debut in 1988 (then known as Asian Club Championship), where they secured the top position in their group. They faced Al-Rasheed of Iraq in the final, defeating them on away goals, thus fending the Iraqis off in order to claim the title of the first Arab team to ever win the championship. The victorious team was largely made up locals, with the exception of Lebanese Wassef Soufi and Iranian Amir Ghalenoii, who did not participate in the final due to the Iran–Iraq War. In addition to winning the Asian Champions League, they won the Sheikh Jassim Cup and the league on that year. They were the first team to play in Iran after the Iran–Iraq War, losing 1–0 to Esteghlal in an ACC match in 1991. The 1990s were a lean phase for Al Sadd, regarding the league. They could not win even one league championship during that period. However, they did manage to open their account in the Heir Apparent Trophy and also won the Gulf Club Champions Cup in 1991.