Obayashi, Naoki
Current rating: 1541
Record: 14-15-1
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1386 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 39 | Hagiwara, Noriyuki (1753) | Lost 1-2 | -111375 |
| 5standard | 174 | Sim, Chapman (1660) | Won 2-1 | +231398 |
| 6standard | 95 | Yusuke K., (1500) | Won 2-0 | +201418 |
| 7standard | 20 | Kenta S., (1522) | Lost 0-2 | -171401 |
| 8standard | 97 | Maeno.J, Kazushi (1554) | Won 2-1 | +211422 |
| 9standard | 48 | Han, Chin Yao (1573) | Won 2-0 | +211443 |
| 10standard | 38 | Uchida, Momotarou (1694) | Won 2-0 | +221465 |
| 11standard | 16 | Terauchi, Tatsuya (1573) | Won 2-1 | +201485 |
| 12standard | 10 | Ootsuka, Koutarou (1796) | Won 2-1 | +241509 |
| 13standard | 5 | Yamasaki, Yoshitaka (1700) | Won 2-0 | +211530 |
| 14standard | 6 | Sasaki, Tsutomu (1698) | Won 2-0 | +211551 |
| 15standard | 3 | Satou, Rin (1756) | ID | 01551 |
| Qstandard | Asahara, Akira (2020) | Lost 0-2 | -101541 | |
| top | average opponent: 1677record: 9-3-1 | new rating: 1541 | ||
| Grand Prix Okayama 2004 (extended) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 7 | Chuujou, Yoshihiko (1500) | Won 2-0 | +201431 |
| 2extended | 5 | Okaguchi, Takeshi (1464) | Lost 1-2 | -171414 |
| 3extended | 141 | Kobayasi, Yosihisa (1499) | Won 2-0 | +191433 |
| 4extended | 69 | Nomura, Eiji (1660) | Lost 0-2 | -141419 |
| 5extended | 107 | Komura, Nobuhiro (1486) | Lost 0-2 | -171402 |
| 6extended | 136 | Katou, Masanari (1501) | Lost 1-2 | -161386 |
| top | average opponent: 1518record: 2-4 | new rating: 1386 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 116 | Okuyama, Tatsunori (1518) | Lost 1-2 | -181463 |
| 3block | 297 | Ohno, Isao (1500) | Lost 0-2 | -171446 |
| 4block | 331 | Umesaki, Naoaki (1482) | Lost 1-2 | -171429 |
| 5block | 327 | Takahashi, Masato (1464) | Lost 0-2 | -181411 |
| top | average opponent: 1491record: 0-4 | new rating: 1411 | ||
| Grand Prix Kyoto 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 110 | Yoshizawa, Hiromi (1413) | Draw 1-1 | -21498 |
| 2sealed | 180 | Saito, Takafumi (1500) | Won 2-0 | +181516 |
| 3sealed | 116 | Facchini, Nullo (1502) | Lost 0-2 | -181498 |
| 4sealed | 193 | Iwade, Takashi (1551) | Won 2-0 | +191517 |
| 5sealed | 134 | Mizuta, Kazuo (1466) | Won 2-0 | +171534 |
| 6sealed | 81 | Nakatani, Hiroshi (1538) | Lost 0-2 | -181516 |
| 7sealed | 120 | Nakashiro, Mizuki (1538) | Lost 0-2 | -171499 |
| 8sealed | 47 | Nakagawa, Kazunori (1501) | Lost 1-2 | -181481 |
| top | average opponent: 1501record: 3-4-1 | new rating: 1481 | ||