| event | round | table | player one | result | player two |
| Grand Prix Fukuoka 2002 | 11 | 8 | Shiozu, Ryouma (1835) | Lost 0-2 | Nakamura, Shuhei (1782) |
| Grand Prix Nagoya 2004 | 10 | 6 | Shiozu, Ryouma (1956) | Won 2-1 | Nakamura, Shuhei (1884) |
| Pro Tour Nagoya 2005 | 5 | 7 | Shiozu, Ryouma (1951) | Won 2-0 | Nakamura, Shuhei (1972) |
| Grand Prix Kitakyushu 2005 | 7 | 34 | Shiozu, Ryouma (1799) | Won 2-1 | Nakamura, Shuhei (1951) |