Tomoharu Saito trails the series against
Owen Turtenwald, 2-3.
| event |
round |
table |
player one |
result |
player two |
| Grand Prix Denver 2008 | 13 | 4 | Saito, Tomoharu (1859) | Lost 0-2 | Turtenwald, Owen (1882) |
| Grand Prix Washington DC 2014 | 10 | 46 | Saito, Tomoharu (2041) | Lost 1-2 | Turtenwald, Owen (2133) |
| Grand Prix Ottawa 2014 | 9 | 62 | Saito, Tomoharu (1955) | Lost 1-2 | Turtenwald, Owen (2131) |
| Grand Prix Richmond 2018 (leg) | 13 | 2010 | Saito, Tomoharu (1985) | Won 2-1 | Turtenwald, Owen (2118) |
| Grand Prix Atlanta 2018 | 13 | 114 | Saito, Tomoharu (1983) | Won 2-1 | Turtenwald, Owen (2032) |