| event | round | table | player one | result | player two |
| 2003 World Championship | 12 | 1 | Nieminen, Tuomo (1797) | Won 2-0 | Okamoto, Jin (1951) |
| 2003 World Championship | 17 | 80 | Nieminen, Tuomo (1833) | ID | Okamoto, Jin (2004) |
| 2003 World Championship | S | Nieminen, Tuomo (1871) | Lost 1-3 | Okamoto, Jin (2002) | |
| 2005 World Championship | 17 | 27 | Nieminen, Tuomo (1873) | Draw 1-1 | Okamoto, Jin (1892) |