The Vietnamese club played their strongest squad against Cambodian champions Nagaworld looking for a victory.
Hanoi immediately dominated the game and attacked in waves. In the six minute they opened the scoring through a piledriver from defender Do Duy Manh from 35 meters out. The second goal came seven minutes later from a tap-in by forward Ganiyu Oseni.
When a Nagaworld defender scored an own goal from a corner, Hanoi FC were leading by three goals in less than 30 minutes.
At halftime the score was 5-0.
The second half was all Oseni’s as he scored three more goals. Nguyen Van Dung and Ngan Van Dai scored one each.
The previous highest margin had been 9-0 when Uzbek club Nasaf beat India’s Dempo SC in 2011.
Hanoi next play Singapore’s Tampines Rovers FC on March 11.