Maya Yoshida captained Japan as they booked their place in the Asian Cup semi-finals with a 1-0 victory over Vietnam.
Yoshida went close to breaking the deadlock in the 28th minute heading home a corner that proved too powerful for the ‘keeper.
However, the decision was referred to VAR and it was ruled out after the Saints defender was deemed to have headed it on to his own hand.
It was the first time it had ever been used at the tournament and it came into action again on 57 minutes, when Japan were awarded a penalty. Ritsu Doan stepped up to convert from the spot.
They will now await their semi-final opponents, with China taking on Iran later in the day.
South Korea take on Qatar, while UAE face Australia to see who will join Samurai Blue in the final four.