Kaoru Mitoma’s late double secured Japan’s qualification for a seventh straight World Cup finals on Thursday as the Samurai Blue beat Australia 2-0 in Sydney to ensure Saudi Arabia also qualified for the finals in Qatar. Mitoma replaced Takumi Minamino in the 84th minute and claimed a quick-fire brace that guaranteed Hajime Moriyasu’s side a top-two finish in Group B of Asia’s preliminaries and sealed Saudi Arabia’s World Cup spot. The Australians cannot finish higher than third and will face the third-place finisher in Group A in a playoff, with the winners taking on the fifth-best South Amer…