In a fiercely contested race , New Zealand 's Sylvia Potts tripped .
In a fiercely contested race , New Zealand 's Sylvia Potts fell just one metre from the finish line , with Ridley carefully avoiding the falling athlete on her outside , to take the title .
In a fiercely contested race , New Zealand 's Sylvia Potts tripped and fell just one metre from the finish line , with Ridley carefully avoiding the falling athlete on her outside , to take the title .