Sumikawa, Youhei
Current rating: 1540
Record: 5-3
| Grand Prix Kitakyushu 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 70 | Juumonji, Tarou (1495) | Lost 0-2 | -181482 |
| 2sealed | 193 | Uchida, Momotarou (1570) | Won 2-1 | +201502 |
| 3sealed | 163 | Ihara, Keita (1465) | Won 2-0 | +171519 |
| 4sealed | 83 | Baba, Youichi (1517) | Won 2-1 | +181537 |
| 5sealed | 54 | Matsumura, Takehiko (1518) | Won 2-1 | +171554 |
| 6sealed | 32 | Hibino, Yasutaka (1533) | Won 2-1 | +181572 |
| 7sealed | 19 | Kawanaka, Yoshiaki (1696) | Lost 1-2 | -161556 |
| 8sealed | 67 | Sasahara, Yasufumi (1646) | Lost 0-2 | -161540 |
| average opponent: 1555record: 5-3 | new rating: 1540 | |||