The Pool A standings are Japan (14), Ireland (11), Scotland (10), Samoa (5) and Russian Federation (0).
Gregor Townsend fears Scotland may be forced to find an alternative venue for Sunday's make-or-break World Cup showdown with Japan as Typhoon Hagibis prepares to batter Yokohama.
Although a major improvement in the weather is expected on Sunday, the potential path of the typhoon is likely to result in severe weather at Suzuka on Saturday, putting qualifying at risk.
The Scots had no time for sentiment.
Argentina was set for a consolation third place and automatic qualifying spot for the 2023 tournament from Pool A after finishing the first half against the United States with a 19-5 lead Wednesday.
Leg injuries to three-try hero Josh Adams and centre Jonathan Davies will be assessed on Thursday, Gatland said.
Sanchez then set up the second as his short kick took a terrible bounce to wrong-foot Mike Te'o and give Tuculet an unexpected second, followed soon after by his own second and the team's third. Scrumhalf George Horne had a hat trick and was denied a fourth because of one of the forward passes.
But Townsend was delighted to see his team run in nine tries against the Russians to secure the bonus point which puts them in control of their own destiny.
Things got even worse for Russian Federation as hooker George Turner and winger Tommy Seymour touched down before Horne completed his hat-trick.
He said: "To see it in the World Cup really surprised me".
And an injury-time fourth try that gifted Japan, shock 19-12 victors over Ireland, a bonus point against Samoa set up the do-or-die showdown against the Scots, should the latter not mess up against Russian Federation.
- Australia have won all 18 of their World Cup matches against non-tier one nations, their average margin of victory in those games a mammoth 46 points. In the space of a game, Adam surpassed his uncle's 18 career points at the Rugby World Cup.
He was unable to complete but the next score was only minutes away as Mallia, again untouched, got the fourth, and soon after, and identical fifth after a quick lineout caught the Americans napping. Gavin Hastings' 227 points is second on the tournament's all-time list. Only wing Graham was retained.
"Japan are an incredible team, so tough to play against, and we did well against them".