Sumitada Moriguchi

is a Japanese pair skater. With partner Yuna Nagaoka, he is the 2026 Four Continents bronze medalist, the 2025 Asian Winter Games bronze medalist, the 2025 CS Kinoshita Group Cup bronze medalist, and a two-time Japanese national champion. At these events, Nagaoka/Moriguchi finished fourth and sixth respectively. Although the pair scored the scored the minimum technical element score needed for the free skate, they failed to score the minimum technical element score for the short program. As a result, they were unable to compete at the 2024 World Championships. Initially only assigned one Grand Prix event, Nagaoka/Moriguchi's names were assigned to the 2024 Finlandia Trophy days before the event following the withdrawal of Australian pair team Golubeva/Giotopoulos Moore. At the event, the pair place eighth of the eight pair teams in the short program but would score a personal best free skate by almost eight points, finishing third in that competition segment and moving up to sixth place overall.

In late December, the pair won the silver medal at the 2024–25 Japan Championships behind Miura/Kihara.

Selected to compete at the 2025 Asian Winter Games in Harbin, China, Nagaoka/Moriguchi won the bronze medal behind Geynish/Chigirev and Ryom/Han.

At the 2025 Four Continents Championships in Seoul, South Korea, Nagaoka/Moriguchi finished in seventh place following a ninth-place short program and a sixth-place free skate. Going on to compete at the 2025 World Championships in Boston, Massachusetts, United States the following month, Nagaoka/Moriguchi placed twenty-second in the short program and did not advance to the free skate segment.

The following month, Nagaoka and Moriguchi took the bronze medal at the 2026 Four Continents Championships in Beijing, China. "This is our first Four Continents championships medal," noted Moriguchi. "We are generally happy about that. So, this medal will be embedded in our skating career memory."

In February, Nagaoka and Moriguchi competed in the Winter Olympics, their first. They finished 19th of 19 teams after Nagaoka fell on their side-by-side triple loop and throw triple Salchow, which kept them from qualifying for the free skate.

In March, Nagaoka and Moriguchi competed at the 2026 World Figure Skating Championships, where they finished fourth. They were fifth in the short program and third in the free skate. “We’ve been doing our best as a pair to push ourselves to the limit of what we can do,” said Moriguchi. “So, I’m glad we were able to perform in a way that feels like it paid off.”

Programs Pair skating with Yuna Nagaoka Season Short program Free skating Exhibition 2025–2026

Goodbye Yellow Brick Road Tree of Life Suite V. Figlia del Cielo I. Sonanze II. Fiamme VI. Wild Side

Pump It Up! Gonna Make You Sweat (Everybody Dance Now) 2024–2025