Team GB's Charlotte Worthington won the first ever Olympic gold medal in BMX freestyle with a sensational second run at the Ariake Urban Sports Park on Sunday.
Worthington crashed in her first run in the final but produced an incredible range of tricks to top the leaderboard with a score of 97.50.
American favourite Hannah Roberts, who scored 96.10 in a superb first run, could not improve in her second run and settled for silver. Swiss Nikita Ducarroz took the bronze.
The 25-year-old Worthington, who gave up a career as a chef to compete in BMX having initially ridden scooters, saved her best until last to snatch gold.
It looked nailed on for world champion Roberts after she dazzled the judges with a sizzling first run - celebrating by hurling her bike across the park.
But each of the nine riders got two 60-second runs with only the best score counting, so when Worthington crashed attempting a rare 360 degree backflip she was not out of the running.
Shortly afterwards she produced the ride of her life.
She landed the 360 backflip and then towards the end of her run she nailed a forward flip - an audacious move that ultimately edged it her way.
Worthington celebrated wildly with coach Jamie Bestwick, a BMX freestyle great, as her score appeared.
She still had to wait to see what Roberts could pull out of the hat, but the 19-year-old American lost momentum early in her second run and abandoned it - sparking wild celebrations from the British camp.
It comes after 2016 BMX champion Connor Fields suffered a brain haemorrhage during his BMX Olympic semi-final on Thursday.
The 28-year-old was defending his crown but his bid for another gold came to a tragic end after a hard crash in the first corner of the race.
The cyclist suffered a bleed on the brain and USA Cycling released a statement regarding his condition.
It read: "Doctors report there has been no additional bleeding and no new injuries found.
"Fields has been moved out of the critical care unit and will remain in the hospital until cleared."
