A dramatic late goal helped Al Jazira to a first-leg win in the AFC Champions League last 16, while Al Sadd were also victorious on Monday.
Khalifa Alhammadi scored a 96th-minute goal to see Al Jazira overcome Persepolis 3-2 in Abu Dhabi.
Godwin Mensha's second-half penalty looked set to give the Iranian visitors the upper-hand after Henk ten Cate's Al Jazira had come from behind to lead 2-1.
But there was late drama, Alhammadi heading in a Mbark Boussoufa set-piece to give the hosts a hard-fought win.
FULL-TIME | Al Jazira FSC (UAE) 3-2 Persepolis FC (IRN)!It’s a five-goal thriller in the UAE! The Iranians will have to put a perfect performance back at home to fight their way back to victory!May 7, 2018
In Doha, a brace from Boualem Khoukhi led Al Sadd to a 2-1 win over Al Ahli.
Khoukhi produced two good finishes in the opening half-hour and the hosts held on for their win despite Muhannad Asiri's 47th-minute goal.
FULL-TIME | Al Sadd SC (QAT) 2-1 Al Ahli Saudi FC (KSA)Al Sadd find the back of the net twice in the first half but Mohannad Asiri's goal keeps the Saudi club’s hopes of going through alive!May 7, 2018
The second legs of the round-of-16 ties will be played next week.
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