Preview - Group A: Top spot at stake as Al Hilal, Istiklol square off in AFC Champions League

Preview - Group B: Air Force Club, Tractor FC out to end pursuit of AFC Champions League triumph

Preview - Group B: Sharjah bent on widening lead in AFC Champions League tie against Pakhtakor

Preview - Group D: No room for error for Al Sadd, Al Wehdat in AFC Champions League clash

Preview - Group D: Top spot at stake for Foolad Khouzestan, Al Nassr in AFC Champions League face-off

Preview - Group E: FC Goa relishing AFC Champions League encounter with Persepolis

Preview - Group E: Victory only option for Al Rayyan, Al Wahda in AFC Champions League showdown