Chloe Kim applauds Choi Ga-on as she receives her gold medal

Seventeen-year-old Choi Ga-on denied American great Chloe Kim snowboarding history as she brushed off an early fall to win Winter Olympic halfpipe gold.

Kim had been hoping to become the first snowboarder - male or female - to win three consecutive Olympic gold medals.

But as heavy snow fell in Livigno, South Korean Choi usurped Kim at the top of the standings with 90.25 points from her final run, a score the 25-year-old could not better on her last attempt.

It showed remarkable resilience from Choi, after she had earlier taken a brutal fall in which she hit the icy lip of the pipe and flipped into its centre, lying motionless for some time.