| event | round | table | player one | result | player two |
| 2008 World Championship | 6 | 6 | Ootsuka, Koutarou (2098) | Lost 0-2 | Iyanaga, Junya (1884) |
| Grand Prix Kobe 2009 | 8 | 14 | Ootsuka, Koutarou (2117) | Lost 0-2 | Iyanaga, Junya (1999) |
| Grand Prix Bangkok 2009 | 8 | 18 | Ootsuka, Koutarou (2152) | Won 2-1 | Iyanaga, Junya (1934) |