Al Rayyan battled for possession but found it hard against a speedy Thai Son Nam side.

The Vietnamese side had the first look at goal in the third minute when captain Tran Van Vu sent a cross deep into Al Rayyan territory but Tran Thai Huy’s glancing header just missed the target.

Naft Al Wasat, who defeated Qatar’s Al Rayyan 9-4 in their opening match, pressured AGMK early on when Salim Faisal fired his shot into the side netting following a set-piece situation.

AGMK, however, were equally adept in attack and Ikhtiyor Ropiev - who went on to score a hat-trick - forced a save from Naft Al Wasat goalkeeper Yahya Abdulnoor in the third minute with a long-range effort.

Erem dominated play from the start as they looked to bounce back from their 8-3 loss to Shenzhen Nanling Tielang in their opening match.

The Kygryz Republic club opened their account in the fourth minute when goalkeeper Farid Soheili sent a long pass to an unmarked Azamat Mendibaev who scored from a header.

Mes Sungun began their title defence in style with a convincing 8-2 win over debutants Kazma SC of Kuwait at the Bangkok Arena.

The Islamic Republic of Iran club lead the Group D standings by a superior goal difference over three-time champions Nagoya Oceans, who came back from a goal down to defeat United Arab Emirates’ Al Dhafra 4-2.

Vamos had their backs against the wall against Soro Company, who fought back from four goals down to level the tie but Dennis Guna Bawana broke the deadlock which spurred Vamos to a 6-4 victory at the Bangkok Stadium.

Reza Fallahzadeh’s side lead the Group C standings on goal difference ahead of Lebanon’s Bank of Beirut, who collected three points from their 4-2 win over Victoria University College.

Mes Sungun raced off the blocks as they utilised a high pressing game against Kazma, who are making their first appearance in the competition.

The Kuwaiti side, however, were quick on the counter-attack as they kept Mes Sungun on their toes and were always a danger going forward.

Bank of Beirut had the lion’s share of possession from the start and they took just two minutes to find the back of the net.

Dragan Tomic got the ball rolling when his low drive from the edge of the area forced Victoria goalkeeper Pyae Phyo Aung into a save but the custodian spilled the ball onto the path of Ali Tneich who had the easiest of tap-ins.