American Clark nailed two tremendous runs, scoring 93 on the
first and then topping that with a 95 to win her heat and book a
spot in the final.
In the second heat, Australia's defending Olympic champion
Bright posted a confident 93 on her first run.
The top three in each heat qualified directly for Wednesday
evening's final, where they will be joined by the six best
riders in the semi-final.
Reigning world champion Arielle Gold was ruled out after
sustaining an injury. The 17-year-old American fell during her
warm-up half an hour before the competition began, and was ruled
out after consultations with medical staff.
(Editing by Peter Rutherford)
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