| event | round | table | player one | result | player two |
| 2003 World Championship | 6 | 4 | Sonne, Jonathan (1808) | Lost 0-2 | Okamoto, Jin (1890) |
| 2003 World Championship | 14 | 106 | Sonne, Jonathan (1837) | Lost 1-2 | Okamoto, Jin (1949) |
| Pro Tour San Diego 2004 | 15 | 10 | Sonne, Jonathan (1928) | Lost 0-2 | Okamoto, Jin (2009) |