Team Japan won the women's competition when Americans Kimmie Meissner and Sasha Cohen missed triple jumps on Sunday in the US Figure Skating Campbell's Cup.
Team USA won the men's title and Team Canada took the pairs/dance event on Sunday.
Japan's Mao Asada, Mai Asada and Miki Ando swept the women's segment as Olympic silver medalist Cohen and world champion Meissner missed the triples, costing them valuable points.
"I was a little disappointed," said Cohen, the defending US champion. "I popped my flip. I'm just happy to be on my feet."
Meissner said she missed some jumps, but performed well.
"To me, it was more like a show," she said. "It was fun."
Also competing against Japan, Team USA won two of three portions of the men's program.
Johnny Weir, the three-time US champion, got his team rolling by winning the short program.
"It was OK," said Weir, who was battling a case of flu. "It was kind of slow."
American Scott Smith won the free skate.
Two-time world bronze medalist Evan Lysacek said he enjoyed teaming up with Weir.
"It's an awesome way to start the season," Lysacek said. "I'm sure he'll want to beat me, and I'll want to beat him, but it's nice to be on a team rooting for each other. It's a long, difficult season, and it's nice to have a fun one to kick it off."
The winning teams in each of the individual competitions won US$60,000 and the losing teams received US$30,000.
In the pairs and ice dancing competition between Canada and the US, the Canadian team won US$40,000 and Team USA received US$20,000.
Team Canada won both the short program and free skate in pairs, and the free dance event. Olympic silver medalists Tanith Belbin and Ben Agosto took the original dance for the US.
Jean-Sebastian Fecteau teamed with Utako Wakamatsu to capture the free dance.
"Canada has always had three or four what I call world-level teams," Fecteau said. "I've always said ... that it's tougher to get [into international competition] than it is to finish in the top 10 in the world."