Okumura, Tatsurou
Current rating: 1507
Record: 3-3
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 429 | Pui, Boon Keng (1637) | Won 2-0 | +201520 |
| 2sealed | 50 | Tashibu, Yo (1518) | Won 2-1 | +181538 |
| 3sealed | 167 | Taniguchi, Hidehisa (1603) | Lost 1-2 | -161522 |
| 4sealed | 179 | Koike, Katsutoshi (1483) | Lost 1-2 | -191503 |
| 5sealed | 304 | Oki, Hiroki (1491) | Won 2-0 | +181521 |
| 6sealed | 247 | Mashima, Mitsuharu (1759) | Lost 0-2 | -141507 |
| average opponent: 1582record: 3-3 | new rating: 1507 | |||