Canadian pairs Meagan Duhamel and Eric Radford in the short program and Kaitlyn Weaver and Andrew Poje in the ice dance are in second after the opening day at the Four Continents figure skating championships in Tapei, Taiwan.
Radford and Duhamel trail the Chinese duo of Wenjing Sui and Cong Han 78.51-71.90.
"Meagan was ill all day today heading into the short program," said Radford. "It prevented us from having a really great skate which is what we were hoping for. But we still did some great elements out there. It's unfortunate our lutz was downgraded today and we lost a lot of points there."
Maia and Alex Shibutani of the United States led after the ice dance short program with 72.86. Weaver and Poje were second with 72.42 followed by Madison Hubbell and Zachary Donohue of the United States with 69.36.
Satoko Miyahara of Japan led after the women's short program.
Bidding for her first international title, Miyahara opened with a flawless triple lutz, triple toe loop combination and also cleanly landed a triple flip and a double axel for a personal-best 72.48 points.
"It's very satisfying to get such a high score in an international competition," Miyahara said. "I feel like I've cleared the first hurdle with this result in the short program."
Chartrand 7th after women's short
Kanako Murakami, also of Japan, was second with 68.51 points followed by Mirai Nagasu of the United States with 66.06.
Canadian Alaine Chartrand was seventh with 59.71 points.
"I wasn't quite myself this time," said Chartrand. "I'm pretty disappointed. I had some issues with my combination and didn't get my levels. All I can do is look forward to my free program."
The men's short program is on Friday. Defending champion Denis Ten of Kazakstan withdrew due to a knee injury. Three-time world champion Patrick Chan of Canada is competing along with Skate America champion Max Aaron.
The Four Continents championships are sanctioned by the International Skating Union and feature skaters from the Americas, Asia, Africa and Oceania.
CBC Sports is streaming segments of the Four Seasons championship online, beginning Friday at 12:20 a.m ET.