Ishii, Masaki
Current rating: 1675
| Grand Prix Yokohama 2012 (modern) | starting rating: 1689 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 67 | Sasaki, Masaya (Aichi) (1482) | Won 2-0 | +141703 |
| 2modern | 5 | Morishima, Kenta (1549) | Won 2-0 | +151718 |
| 3modern | 109 | Uchida, Tomoki (1535) | Lost 1-2 | -211697 |
| 4modern | 220 | Terada, Tadashi (1474) | Lost 1-2 | -221675 |
| top | average opponent: 1510record: 2-2 | new rating: 1675 | ||
| Grand Prix Kobe 2008 (Lorwyn block) | starting rating: 1531 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 31 | Kato, Shosuke (1500) | Won 2-0 | +181549 |
| 2block | 191 | Yamashita, Satoshi (1518) | Won 2-1 | +171566 |
| 3block | 43 | Tominaga, Mario (1734) | Lost 1-2 | -151551 |
| 4block | 143 | Shiraishi, Masaharu (1481) | Won 2-1 | +171568 |
| 5block | 54 | Nagao, Keisuke (1519) | Won 2-1 | +171585 |
| 6block | 85 | Yoshizawa, Takuya (1553) | Won 2-1 | +171602 |
| 7block | 33 | Chang, Chih-Hsiang (1764) | Draw 1-1 | +31605 |
| 8block | 39 | Kurakami, Shun (1722) | Lost 0-2 | -151590 |
| 9block | 76 | Jinbu, Yousuke (1509) | Won 2-0 | +161606 |
| 10block | 43 | Asahara, Akira (1971) | Won 2-1 | +241630 |
| 11block | 34 | Saito, Takaya (1689) | Won 2-0 | +201650 |
| 12block | 16 | Kanazawa, Hiroyasu (1717) | Won 2-1 | +191669 |
| 13block | 13 | Hirashima, Yuutarou (1604) | Won 2-0 | +171686 |
| 14block | 9 | Kimura, Kazuki (1649) | Lost 0-2 | -191667 |
| 15block | 42 | Iwasaki, Yuusuke (1896) | Won 2-1 | +221689 |
| top | average opponent: 1655record: 11-3-1 | new rating: 1689 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 40 | Yano, Kunihiro (1541) | Won 2-1 | +191519 |
| 3standard | 40 | Kuroda, Jun'ichirou (1500) | Won 2-1 | +171536 |
| 4standard | 91 | Shouyama, Youhei (1617) | Won 2-0 | +201556 |
| 5standard | 43 | Ogata, Shouichirou (1561) | Lost 1-2 | -181538 |
| 6standard | 74 | Okita, Yuji (1598) | Lost 0-2 | -171521 |
| 7standard | 138 | Hwang, Chi-Chung (1684) | Won 2-1 | +211542 |
| 8standard | 86 | Fujita, Osamu (1967) | Lost 0-2 | -111531 |
| top | average opponent: 1638record: 4-3 | new rating: 1531 | ||