Freestyle halfpipe is much like its counterpart in snowboarding, except it's done on skis. Competitors twist and turn through a series of tricks, and are judged by complexity and amplitude.
Winning a string of X Games medals as a teen, Yater-Wallace was on course for stardom, his slightly unruly hair and laid-back demeanor a perfect fit for a young sport.
But just like Hendrickson, he was injured shortly before the Olympics, suffering a collapsed lung and then broken ribs. Sochi was a letdown as he failed to make the final.
Afterward, he and Hendrickson commiserated over pizza -- their first date.
"Everybody thought both of us would win," he says.
Back home, the troubles continued. Hendrickson re-injured her knee and, in the winter of 2015, Yater-Wallace began feeling abdominal pain. The discomfort landed him in a hospital, where tests revealed that a form of Streptococcus had infected his gallbladder and caused an abscess on his liver.
His health quickly deteriorated, prompting doctors to place him in a medically induced coma for more than a week. Hendrickson stayed at his bedside in intensive care, sleeping in the room some nights.
At one point, a nurse suggested they keep immediate family on call.
"Watching him in a hospital bed almost die for eight days is pretty much the worst thing you can imagine," she says.
When his condition finally stabilized, she checked herself in for knee surgery.