As the clock ticked down in Shizuoka, the TV coverage zoomed in on the faces of the Ireland players. They looked shocked - but not half as much as we all did.
However, there was one man who had almost predicted Japan’s shock win.
Hours earlier, I had been interviewing one of rugby’s all-time greats, George Gregan. He played in four Rugby World Cups, winning the 1999 tournament with Australia.
Gregan finished his career living and playing in Japan and told me told me the nation believes it can win. He wasn’t talking about the Ireland game, he meant the whole tournament.