Where are the quads in pairs’ figure skating?

At the 2015 World Figure Skating Championships in Shanghai, five of the top seven pair teams attempted a quad element in their free skates: three quadruple twists, and two throw quadruple salchows.

“We want to move the sport forward,” said Eric Radford, who executed a throw quad salchow and won the event with partner Meagan Duhamel. “I think, in a few years, there will be two kinds of pairs: those with a quad element, and those without.”

Radford was wrong.

At the 2021 World Championships in Stockholm last week, no pair tried a quad twist or throw. Ditto in 2019. You have to go back to the 2018 World Championships in Milan, when Yevgenia Tarasova and Vladimir Morozov did a quadruple twist in…