Kodama, Aritsune
Current rating: 1483
Record: 15-17
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 66 | Tada, Hidenobu (1500) | Won 2-0 | +181500 |
| 2standard | 99 | Fujino, Satoshi (1424) | Won 2-0 | +171517 |
| 3standard | 63 | Kaji, Tomohiro (1758) | Lost 1-2 | -141503 |
| 4standard | 142 | Tanikawa, Itaru (1382) | Lost 0-2 | -201483 |
| 5standard | 278 | Mayumi, Ryuuta (1568) | Lost 1-2 | -171466 |
| 6standard | 323 | Ono, Masayuki (1462) | Won 2-1 | +181484 |
| 7standard | 250 | Takemoto, Kousuke (1500) | Lost 1-2 | -181466 |
| 8standard | 208 | Arakane, Daisuke (1390) | Won 2-1 | +171483 |
| top | average opponent: 1498record: 4-4 | new rating: 1483 | ||
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 149 | Sasaki, Yuki (1500) | Won 2-0 | +181515 |
| 2sealed | 53 | Murakami, Norichika (1570) | Lost 0-2 | -171498 |
| 3sealed | 149 | Iwatsuki, Yoshifumi (1526) | Won 2-1 | +191517 |
| 4sealed | 161 | Ohara, Yoshirou (1562) | Won 2-1 | +191536 |
| 5sealed | 56 | Ootsuka, Koutarou (1506) | Lost 1-2 | -191517 |
| 6sealed | 139 | Kinoshita, Koichi (1546) | Lost 0-2 | -171500 |
| 7sealed | 133 | Yamazaki, Hiroyuki(Fukushima (1488) | Lost 1-2 | -181482 |
| top | average opponent: 1528record: 3-4 | new rating: 1482 | ||
| Grand Prix Kyoto 2003 (LGN limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 208 | Nakahama, Kenji (1500) | Won 2-0 | +191485 |
| 2sealed | 125 | Miura, Shigehiro (1518) | Won 2-1 | +181503 |
| 3sealed | 44 | Okuda, Masatoshi (1536) | Lost 0-2 | -171486 |
| 4sealed | 123 | Kawai, Kenta (1554) | Won 2-1 | +191505 |
| 5sealed | 61 | Nakamura, Takuji (1537) | Won 2-1 | +191524 |
| 6sealed | 61 | Kawai, Satoshi (1575) | Won 2-1 | +191543 |
| 7sealed | 35 | Tsumura, Kenji (1603) | Won 2-0 | +191562 |
| 8sealed | 95 | Kurushima, Kouji (1612) | ID | 01562 |
| 9draft | 25 | Murakami, Norichika (1555) | Lost 0-2 | -181544 |
| 10draft | 19 | Yamamoto, Akimasa (1610) | Lost 1-2 | -171527 |
| 11draft | 24 | Fukuchi, Takahiro (1655) | Won 2-0 | +201547 |
| 12draft | 30 | Hayashi, Shinsuke (1641) | Lost 1-2 | -161531 |
| 13draft | 20 | Nishiwaki, Kazuhisa (1562) | Lost 0-2 | -181513 |
| 14draft | 23 | Shimizu, Akihiro (1623) | Lost 0-2 | -161497 |
| top | average opponent: 1577record: 7-6-1 | new rating: 1497 | ||
| Grand Prix Hiroshima 2001 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 57 | Fujita, Osamu (1544) | Lost 0-2 | -171483 |
| 4sealed | 96 | Fujimoto, Takehiro (1519) | Won 2-1 | +181501 |
| 5sealed | 49 | Abe, Ryou (1566) | Lost 0-2 | -161485 |
| 6sealed | 100 | Nose, Koji (1454) | Lost 1-2 | -191466 |
| top | average opponent: 1521record: 1-3 | new rating: 1466 | ||