New Zealand has a new world champion.
Sarah Walker won the BMX World Championship in Adelaide on Saturday night.
Walker, 21, won the silver in 2007 in Canada and the bronze last year in China but was left disappointed with her fourth placing at the Beijing Olympics.
She says she was delighted with her sub-32 second time for Saturday's final, which was her best time of the day.
Walker says the final was by far the best she has ever ridden.
BikeNZ head coach Ken Cools says Walker dominated the track all day and he puts her convincing win down to pure hard work.