| Championship | Event | # | Competitors |
|---|---|---|---|
| National Team Open 2010 | SERC | 2 |
Japan National Team
(JPN) Seiji IINUMA, Shizuka KATSUMATA, Kohsuke NISHIYAMA , Shun NISHIYAMA |
| National Team Open 2010 | 4x50m Medley Relay | 8 |
Japan National Team
(JPN) Kohsuke NISHIYAMA , Shun NISHIYAMA, Masaya SHIMIZU, Haruki YAMAMOTO |