Chikara Nakajima trails the series against
Shota Yasooka, 1-3-1.
| event |
round |
table |
player one |
result |
player two |
| Grand Prix Matsuyama 2005 | 6 | 46 | Nakajima, Chikara (1701) | Lost 1-2 | Yasooka, Shota (1729) |
| Pro Tour Geneva 2007 | 5 | 49 | Nakajima, Chikara (1538) | Won 2-0 | Yasooka, Shota (1888) |
| Pro Tour Austin 2009 | 15 | 19 | Nakajima, Chikara (1865) | Lost 1-2 | Yasooka, Shota (1829) |
| Grand Prix Singapore 2011 | 15 | 1 | Nakajima, Chikara (1924) | ID | Yasooka, Shota (2128) |
| Grand Prix Brisbane 2011 | 11 | 10 | Nakajima, Chikara (1997) | Lost 1-2 | Yasooka, Shota (2104) |