Jamaica's 100 metres party was wrecked by the United States for the second night running as Tori Bowie upstaged Olympic champion Elaine Thompson to land the world title in London.
Twenty-four hours after Justin Gatlin gatecrashed Usain Bolt's farewell, Bowie gained revenge on the athlete who beat her to Olympic gold in Rio last summer.
The 26-year-old took the tightest of victories in 10.85 seconds, dipping to beat Marie-Josee Ta Lou of the Ivory Coast by just 0.01secs.
"I had no idea I had won it," she said.
Holland's Dafne Schippers took bronze in 10.96s, with double Olympic champion Thompson, who had looked so dominant through the rounds, back in fifth in 10.98.
As with Bolt, it was a shocking start which cost her.
And once again the colourful and sizeable Jamaican contingent in the crowd were silenced.
It is the first time since 2005 that the country has not won either the men's or women's 100m at a global championships.