LOSSJuly 20, 2026Koichi TAMAYAMA0 - 2Kang-Eun SEO2026 Chuncheon Korea Open (Kyorugi) · M-74kg · Round of 64
LOSSJune 20, 2026Koichi TAMAYAMA0 - 2Xavier NIKOLOVSKIAustralian Open 2026 (Kyorugi) · M-74kg · Round of 32
LOSSJune 18, 2026Koichi TAMAYAMA0 - 2Yassine HILAL2026 WT President's Cup Oceania (Kyorugi) · M-74kg · Round of 32
LOSSAugust 23, 2025Koichi TAMAYAMA0 - 2Hidetaka MAEDA2025 WT President's Cup Oceania (Kyorugi) · M-63kg · Round of 16
WINAugust 23, 2025Koichi TAMAYAMA2 - 0Dustin BETTS2025 WT President's Cup Oceania (Kyorugi) · M-63kg · Round of 32
LOSSAugust 23, 2025Koichi TAMAYAMA0 - 2Aaron CHOYAustralian Open 2025 (Kyorugi) · M-63kg · Round of 32
