Kamila Valieva makes Olympic history with quadruple jumps - The Washington Post
Quadruple Salchow Yuzuru Hanyu - YouTube
How Quad Jumps Have Changed Women's Figure Skating | FiveThirtyEight
Rika Kihira nails quad to seize second straight national title - The Japan Times
Shanghai Daily on X: "#YuzuruHanyu placed eighth (95.15 points) in the men's short program at #Beijing2022. Popping a quad salchow, he explained in post-match interview that his blade got caught in a