New Zealand's final representative, Janina Kuzma, took a fall in the second half of her run and finished 10th of the 12 finalists.
Finn Antti-Jussi Kemppainen showed why he's rated among the bright young racers with victory in the men's final.
Kemppainen, ranked 19th in halfpipe and 14th overall in freeskiing, was fourth best in qualifying but his 86.6 was good enough to edge out American 17-year-old Aaron Blunck's 83.8. American Taylor Seaton took third in 79.4.
"I didn't really expect anything this cool but it's definitely a good start for the season," Kemppainen said.
New Zealand's Lyndon Sheehan, delighted to produce the second best score in qualifying, finished fourth on a 76.4.
New Zealand's other entry Beau-James Wells, put off by a wind gust, took a fall and finished 11th.
Snowboarders make their entry to the Games today with qualifying in the World Cup slopestyle event.
The men's FIS giant slalom is at Coronet Peak and the curling competition begins in Naseby.