Siamak Nemati (L) of Persepolis FC vies with Nam Tae-hee of Al Duhail SC during the first knock-out round of AFC Asian Champions League football match between Qatar's Al Duhail SC and Iran's Persepolis FC at the Khalifa International Stadium in Doha, capital of Qatar, Aug. 28, 2018. Al Duhail SC won 1-0. (Xinhua/Nikku)