Ishigami, Kei
Current rating: 1534
Record: 25-24-5
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 212 | Matsumura, Takehiko (1517) | Won 2-1 | +181536 |
| 2standard | 234 | Miura, Hiroyuki (1475) | Lost 0-2 | -191517 |
| 3standard | 277 | Matsubayashi, Masahiro (1487) | Won 2-0 | +171534 |
| 4standard | 209 | Okada, Daisuke (1684) | Won 2-0 | +211555 |
| 5standard | 116 | Katou, Masanari (1584) | Won 2-0 | +191574 |
| 6standard | 53 | Yamamoto, Shohei (1518) | Draw 1-1 | -11573 |
| 7standard | 80 | Omichi, Nobuhito (1529) | Draw 1-1 | -11572 |
| 8standard | 136 | Honnami, Tomoyuki (1524) | Lost 0-2 | -191553 |
| 9standard | 151 | Tanaka, Takayuki (1500) | Lost 1-2 | -191534 |
| top | average opponent: 1535record: 4-3-2 | new rating: 1534 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 189 | Iwamura, Ryouichi (1518) | Won 2-0 | +181528 |
| 3block | 88 | Sugama, Hideichi (1566) | Lost 1-2 | -171511 |
| 4block | 209 | Murakami, Norichika (1595) | Won 2-1 | +201531 |
| 5block | 72 | Takasaki, Yuichi (1621) | Lost 0-2 | -171514 |
| 6block | 185 | Takakuwa, Akihiro (1736) | Won 2-0 | +221536 |
| 7block | 153 | Tazawa, Jun (1521) | Lost 1-2 | -181518 |
| top | average opponent: 1593record: 3-3 | new rating: 1518 | ||
| Grand Prix Hiroshima 2003 (extended) | starting rating: 1492 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 28 | Masamura, Ayumu (1487) | Won 2-0 | +171509 |
| 2extended | 36 | Mukuno, Yuuji (1557) | Lost 0-2 | -171492 |
| 3extended | 108 | Saitou, Hiroaki (1518) | Draw 1-1 | +11493 |
| 4extended | 133 | Okada, Masami (1449) | Won 2-1 | +171510 |
| 5extended | 96 | Mizuno, Akimitsu (1484) | Won 2-0 | +181528 |
| 6extended | 53 | Kawamura, Kazushi (1569) | Lost 1-2 | -181510 |
| top | average opponent: 1511record: 3-2-1 | new rating: 1510 | ||
| Grand Prix Utsunomiya 2002 (ONS rochester) | starting rating: 1511 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 163 | Komuro, Shuu (1548) | Lost 0-2 | -181493 |
| 2sealed | 253 | Toriumi, Takashi (1421) | Won 2-1 | +171510 |
| 3sealed | 217 | Miyashita, Kenji (1499) | Lost 1-2 | -181492 |
| 4sealed | 266 | Nishikawa, So (1483) | Won 2-0 | +181510 |
| 5sealed | 195 | Yoshino, Eiichi (1505) | Lost 1-2 | -181492 |
| top | average opponent: 1491record: 2-3 | new rating: 1492 | ||
| Grand Prix Sapporo 2002 (Odyssey block) | starting rating: 1494 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 138 | Yaoita, Akihiro (1488) | Lost 0-2 | -181476 |
| 2block | 161 | Katano, Satoshi (1429) | Lost 1-2 | -191457 |
| 3block | 186 | Ishii, Tetsuya (1482) | Won 2-1 | +181475 |
| 4block | 162 | Ono, Tooru (1465) | Draw 1-1 | 01475 |
| 5block | 170 | Jinba, Nobuaki (1481) | Won 1-0 | +181493 |
| 6block | 135 | Saito, Takanobu (1440) | Lost 0-2 | -191474 |
| 7block | 127 | Sasanuma, Kiyoshi (1499) | Won 2-0 | +191493 |
| 8block | 9 | Ishibashi, Kazuya (1496) | Won 2-0 | +181511 |
| top | average opponent: 1473record: 4-3-1 | new rating: 1511 | ||
| Grand Prix Sendai 2001 (extended) | starting rating: 1450 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 97 | Yamamoto, Takashi (1500) | Won 2-0 | +191469 |
| 2extended | 46 | Takada, Taichi (1451) | Lost 0-2 | -181451 |
| 3extended | 125 | Shimizu, Takayasu (1499) | Lost 1-2 | -171434 |
| 4extended | 162 | Kamo, Hidekazu (1482) | Won 2-0 | +191453 |
| 5extended | 124 | Waga, Hiroyuki (1501) | Won 2-0 | +181471 |
| 6extended | 75 | Yasuda, Masaaki (1577) | Lost 0-2 | -161455 |
| 7extended | 107 | Iioka, Kenta (1537) | Won 2-1 | +201475 |
| 8extended | 85 | Chino, Masakazu (1518) | Won 2-1 | +191494 |
| top | average opponent: 1508record: 5-3 | new rating: 1494 | ||
| Grand Prix Shizuoka 2001 (ODY limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 129 | Tanaka, Toshihiko (1500) | Won 2-0 | +191483 |
| 2sealed | 110 | Sakamoto, Yuki (1537) | Draw 1-1 | +11484 |
| 3sealed | 118 | Okada, Takashi (1482) | Lost 0-2 | -181466 |
| 4sealed | 200 | Anma, Yoichi (1499) | Won 2-0 | +181484 |
| 5sealed | 131 | Fuma, Masaharu (1531) | Lost 0-2 | -171467 |
| 6sealed | 175 | Motomura, Shigeru (1502) | Lost 0-2 | -171450 |
| 7sealed | 161 | Kitagawa, Yuuichi (1480) | Lost 1-2 | -181432 |
| 8sealed | 144 | Kawashima, Keisuke (1431) | Won 2-0 | +181450 |
| top | average opponent: 1495record: 3-4-1 | new rating: 1450 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 115 | Ebihara, Hajime (1500) | Won 2-0 | +181518 |
| 2block | 220 | Matsuoka, Tomohide (1519) | Lost 0-2 | -181500 |
| 3block | 314 | Kaneshige, Kozo (1500) | Lost 1-2 | -181482 |
| 4block | 584 | Takahara, Hitoki (1482) | Lost 1-2 | -181464 |
| top | average opponent: 1500record: 1-3 | new rating: 1464 | ||