The other South American matches yesterday saw Chile fall to Bolivia in La Paz, Peru win in Ecuador, Paraguay beaten at home by Uruguay and Colombia gain a point against Brazil. Those results leave Uruguay (27 points) and Colombia (26 points) in favourable positions to gain two of the three remaining automatic qualification spots, alongside Brazil (37 points). Peru and Argentina both sit on 24 points, with the Andean team ahead on goal average, trailed by Chile (23 points) and Paraguay (21). Ecuador (20) look out of contention.
The next match day in October sees Peru travel to Buenos Aires, which shapes as a pivotal clash, while Chile host Ecuador and Paraguay travel to Colombia.
Whoever the All Whites face will be tough - battle-hardened after an 18-game series that began almost two years ago - but Peru or Paraguay appeal as the best options for an upset.
However, the match against Japan is a perfect scenario. The Blue Samurai are a dominant force in Asian football, recently defeating Australia to confirm qualification for their sixth successive World Cup, and will provide stiff opposition. It's also a handy location, which limits travel time for New Zealand's Europea-based players and will allow for minimal interruption to their club schedules.
"Coming up against world-class opposition away from home will give us an ideal build-up," said All Whites coach Anthony Hudson. "We had options for a second game but we want to get our players back to their clubs early to help cope with the heavy schedule we face either side of this window. So this window ticks both boxes for us."
The All Whites enjoyed three wins over Japan in the 1980s; 3-1 (Auckland, 1983), 1-0 (Tokyo, 1983) and 1-0 (Kuala Lumpur, 1984). In the most recent clash, Japan prevailed 4-2 in Tokyo in 2014, with Chris Wood grabbing a brace for New Zealand.