Kaichi Uchida defeated Naoki Nakagawa 3-6 6-3 6-3 in the M25 Sapporo 2 semi-final on hard. Kaichi Uchida claimed a first win over Naoki Nakagawa in three meetings, narrowing the head-to-head to 2–1.
Uchida K. came through in three sets.
Hard: level 1–1 · Clay: Nakagawa N. leads 1–0
Kaichi Uchida beat Naoki Nakagawa 3-6 6-3 6-3. Umpiry, "Kaichi Uchida vs Naoki Nakagawa — M25 Sapporo 2 Semi-final", https://umpiry.com/match/2025-09-13/nakagawa-vs-uchida-m25-sapporo-2-sf?utm_source=cite (as of 13 September 2025).