Britain's Richard Kilty produced a stunning run to win 60m gold at the World Indoor Championships in Sopot.
The 24-year-old held off a field including Nesta Carter, the fifth fastest man ever over 100m, and much-fancied American Marvin Bracy to win in a personal best time of 6.49 seconds.
Tiffany Porter won Britain's first medal of the three-day competition with bronze in the 60m hurdles.
"I'm so honoured to bring a medal home for Team GB," she told BBC Sport.
More to follow.