Ali Alipour (L) of Persepolis FC vies for the ball with Mohammed Musa of Al Duhail SC during the first knock-out round of AFC Asian Champions League football match Qatar's Al Duhail SC and Iran's Persepolis FC at Khalifa International Stadium Doha, capital of Qatar, August 28, 2018. Al Duhail SC won 1-0. (Xinhua/Nikku)