Rippon will not be the oldest skater representing the U.S. in PyeongChang. That will be 30-year-old Christopher Knierim, part of the husband and wife pairs team with his spouse, Alexa, that won the national championship Saturday. The U.S. has not medaled in pairs since 1988, and earned just one pairs bid to South Korea. The Knierims, with a vaunted quad twist in their arsenal, were heavy favorites to earn the spot despite a shaky free skate Saturday. But that they would be in Korea was hardly a given.