Koike, manabu
Current rating: 1443
Record: 2-5-2
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 81 | Suginaka, Toshiya (1500) | Lost 1-2 | -181482 |
| 2modern | 432 | Ishibashi, Naotaka (1465) | Draw 1-1 | 01482 |
| 3modern | 595 | Shioe, Tsugukuni (1479) | Lost 0-2 | -181464 |
| 4modern | 683 | Hirato, Ougi (1464) | Lost 1-2 | -181446 |
| 5modern | 649 | Sakai, Ryuuichi (1446) | Won 2-0 | +181464 |
| 6modern | 549 | Masuda, Kouhei (1463) | Draw 1-1 | 01464 |
| 7modern | 467 | Kato, Masahiro (1414) | Won 2-1 | +171481 |
| 8modern | 363 | Katou, Yoshitaka (1480) | Lost 0-2 | -181463 |
| 9modern | 298 | Sugita, Kou (1378) | Lost 1-2 | -201443 |
| average opponent: 1454record: 2-5-2 | new rating: 1443 | |||