Tomoharu Saito is tied in the series against
Itaru Ishida, 3-3.
| event |
round |
table |
player one |
result |
player two |
| Grand Prix Bangkok 2003 | 12 | 3 | Saito, Tomoharu (1713) | Lost 1-2 | Ishida, Itaru (1924) |
| 2004 World Championship | 11 | 125 | Saito, Tomoharu (1826) | Won 2-0 | Ishida, Itaru (1859) |
| Pro Tour Philadelphia 2005 | 6 | 74 | Saito, Tomoharu (1836) | Lost 0-2 | Ishida, Itaru (1897) |
| Grand Prix Hiroshima 2006 | 9 | 2 | Saito, Tomoharu (1829) | Won 2-0 | Ishida, Itaru (1939) |
| Pro Tour Yokohama 2007 | 5 | 45 | Saito, Tomoharu (2014) | Won 2-0 | Ishida, Itaru (1875) |
| Grand Prix Bangkok 2007 | 13 | 13 | Saito, Tomoharu (1972) | Lost 1-2 | Ishida, Itaru (1957) |