Okabayashi, Shun
Current rating: 1534
| Grand Prix Kyoto 2003 (LGN limited) | starting rating: 1560 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 95 | Saito, Shuichi (1448) | Lost 0-1 | -201540 |
| 2sealed | 265 | Kobayashi, Takumi (1376) | Won 2-0 | +151555 |
| 3sealed | 180 | Mori, Yuji (1500) | Won 2-0 | +171572 |
| 4sealed | 180 | Okamura, Shinya (1551) | Lost 1-2 | -181554 |
| 5sealed | 144 | Kondo, Takahito (1468) | Lost 0-2 | -201534 |
| top | average opponent: 1469record: 2-3 | new rating: 1534 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1572 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 152 | Ohige, Tatsuya (1500) | Won 2-1 | +161588 |
| 2block | 28 | Nagura, Hiroto (1500) | Lost 1-2 | -191569 |
| 3block | 307 | Uchida, Takuya (1499) | Lost 0-2 | -201549 |
| 4block | 450 | Seki, Toshihide (1482) | Won 2-1 | +171566 |
| 5block | 440 | Nishimoto, Takuya (1500) | Won 2-1 | +171583 |
| 6block | 292 | Shigi, Hidenori (1516) | Won 2-1 | +171600 |
| 7block | 132 | Shibuya, Tsutomu (1486) | Lost 0-2 | -201580 |
| 8block | 245 | Nagamune, Masaki (1501) | Lost 1-2 | -201560 |
| top | average opponent: 1498record: 4-4 | new rating: 1560 | ||
| Grand Prix Kyoto 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 185 | Fujihara, Yuji (1500) | Lost 1-2 | -181482 |
| 2extended | 223 | Morinaga, Teppei (1482) | Won 2-0 | +181500 |
| 3extended | 233 | Sasakawa, Yasushi (1500) | Won 2-0 | +181518 |
| 4extended | 182 | Nomichi, Hideki (1533) | Won 2-1 | +181536 |
| 5extended | 80 | Tsujimoto, Satoshi (1519) | Won 2-1 | +181554 |
| 6extended | 64 | Akita, Naoto (1537) | Won 2-1 | +181572 |
| 7extended | 51 | Ishikura, Nobuyuki (1569) | Lost 1-2 | -181554 |
| 8extended | 73 | Maruyama, Satoshi (1554) | Won 2-0 | +181572 |
| top | average opponent: 1524record: 6-2 | new rating: 1572 | ||