The brand new rink is hosting its first global competition this week in preparation for the 2018 Pyeongchang Winter Olympics.
The American opened with a quad lutz-triple toeloop combination at the Gangneung Ice Arena and added a quad flip and a triple axel for 103.12 points.
"It was obviously a goal of ours just to qualify for this event at the beginning of the year", said Moir.
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Mai Mihara took top spot in the women's free skate on Saturday to win the Four Continents, a test event for the 2018 Winter Olympics.
Their team-mates Madison Chock and Evan Bates claimed the bronze, with the pairing achieving a score of 185.58 points. The current Japanese champion Shoma Uno also posted a personal best with 100.28 points. We really felt the energy and we're really happy with certain parts of our performance.
Short program leader Gabrielle Daleman of Canada placed second with 196.91 points and American Mirai Nagasu was third with 194.95.
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In the final minutes, the Blues went to the man-advantage after a questionable tripping call on Robin Lehner . As he entered the zone Eichel hit Nicholas Baptiste with a ideal backhand saucer pass, tying the game at one.
Hanyu, the 2014 Olympic gold medalist seeking his first Four Continents title, scored 97.04 points after under-rotating the opening jump of his quadruple salchow-triple toe loop combination. Madison Hubbell and Zachary Donohue completed a strong showing for team United States of America by coming fourth at 180.82 points.
Kaetlyn Osmond of Canada was second after the short program but finished fourth after placing sixth in the free program.
Elsewhere on Friday, the men's competition got underway with Nathan Chen leading the way after the short program.
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