Ohtsuka, Hayato
Current rating: 1403
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1412 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 113 | Terada, Atsushi (1587) | Won 2-1 | +211433 |
| 2standard | 120 | Mori, Daisuke (1512) | Won 2-1 | +201453 |
| 3standard | 65 | Jinbu, Yousuke (1482) | Lost 1-2 | -181435 |
| 4standard | 144 | Sutou, Takuo (1584) | Lost 1-2 | -151420 |
| 5standard | 334 | Yamamoto, Keitaro (1494) | Lost 0-2 | -171403 |
| top | average opponent: 1532record: 2-3 | new rating: 1403 | ||
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 116 | Furujou, Takashi (1512) | Lost 1-2 | -171427 |
| 2sealed | 221 | Se, Atsuo (1482) | Won 2-1 | +191446 |
| 3sealed | 119 | Yazaki, Hirotaka (1501) | Lost 0-2 | -171429 |
| 4sealed | 216 | Itou, Yuki (1481) | Lost 0-2 | -171412 |
| top | average opponent: 1494record: 1-3 | new rating: 1412 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 67 | Saitou, Daisuke (1500) | Lost 0-2 | -181482 |
| 2block | 333 | Tanaka, Yosuke (1483) | Lost 0-2 | -181464 |
| 3block | 360 | Ootsu, Tadashi (1462) | Lost 1-2 | -181446 |
| 4block | 377 | Tomita, Hikaru (1362) | Won 2-0 | +161462 |
| 5block | 310 | Tsunokawa, Yoshikazu (1422) | Lost 0-2 | -181444 |
| top | average opponent: 1446record: 1-4 | new rating: 1444 | ||