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LOWELL BAILEY (36), who considered retiring in 2016, became the first American to win a world championship, taking the men's 20-kilometer in '17. He was 33rd in the 10K at PyeongChang.
Team USA's youngest Olympian, VINCENT ZHOU (17), became the first figure skater in Olympic history to land a quadruple Lutz.
Women's ice hockey defender CAYLA BARNES (19) was not yet born when the U.S. team won its only gold, in 1998.
By the time teammate 18-year-old Maame Biney was seven, JESSICA KOOREMAN (34) was already a world champion in inline skating.