Japan qualified for a seventh successive World Cup after beating Australia 2-0 in Sydney and ending the Socceroos’ chances of automatic qualification yesterday.
The result also qualified Saudi Arabia from Asia Group B.
Japan was on top of the group with 21 points, two ahead of Saudi Arabia.
Australia remained in qualifying contention in third place. It faced a playoff against the third-place team from Group A, currently the United Arab Emirates, and a possible final game against South American opposition.
The two late goals from substitute Kaoru Mitoma ended an entertaining game during which Japan had been wasteful. Takumi Minamino came close on five occasions.
On Tuesday, Japan hosts Vietnam, bottom of the group with just one win, while Australia travels to Jeddah to take on Saudi Arabia.