Ishibashi, Akihito
Current rating: 1618
Record: 24-21
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1459 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 390 | Yamamoto, Takatoyo (1565) | Won 2-0 | +201479 |
| 2pioneer | 73 | Murahata, Hiroyuki (1522) | Won 2-0 | +191498 |
| 3pioneer | 109 | Kasahara, Takuya (1646) | Won 2-0 | +201518 |
| 4pioneer | 48 | Suzuki, Issei (1596) | Lost 1-2 | -161502 |
| 5pioneer | 334 | Takamura, Kazuki (1588) | Won 2-1 | +191521 |
| 6pioneer | 67 | Yasumoto, Naoki (1549) | Lost 1-2 | -171504 |
| 7pioneer | 298 | Adachi, Kazumasa (1527) | Won 2-0 | +181522 |
| 8pioneer | 224 | Tomita, Naoki (1661) | Won 2-0 | +211543 |
| 9pioneer | 128 | Sawahata, Atsushi (1646) | Lost 0-2 | -161527 |
| 10pioneer | 156 | Kitagawa, Yusuke (1555) | Won 2-1 | +181545 |
| 11pioneer | 135 | Yuki, Ryosuke (1658) | Won 2-0 | +201565 |
| 12pioneer | 95 | Masuda, Tomohito (1620) | Won 2-1 | +191584 |
| 13pioneer | 48 | Fujita, Osamu (1921) | Won 2-0 | +241608 |
| 14pioneer | 32 | Tsubouchi, Tomoya (1958) | Won 2-0 | +241632 |
| 15pioneer | 30 | Numata, Yusuke (1822) | Lost 1-2 | -141618 |
| top | average opponent: 1656record: 11-4 | new rating: 1618 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1433 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 479 | Ando, Masanori (1386) | Won 2-1 | +171450 |
| 2legacy | 210 | Hino, Tomoaki (1431) | Won 2-0 | +181468 |
| 3legacy | 530 | Yoshida, Akihiko (1641) | Lost 0-2 | -151453 |
| 4legacy | 748 | Fujimoto, Kazuki (1450) | Lost 0-2 | -181435 |
| 5legacy | 847 | Nagami, Youichi (1684) | Won 2-0 | +221457 |
| 6legacy | 521 | Hirosawa, Yuki (1416) | Lost 1-2 | -181439 |
| 7legacy | 670 | Hamayasu, Ryo (1505) | Won 2-0 | +191458 |
| 8legacy | 482 | Kato, Yuku5382 (1520) | Won 2-0 | +191477 |
| 9legacy | 320 | De Silva, Aaron (1473) | Lost 0-2 | -181459 |
| top | average opponent: 1501record: 5-4 | new rating: 1459 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1436 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 836 | Sugasawa, Tomoyuki (1484) | Lost 0-2 | -171419 |
| 2standard | 865 | Isigaki, Nobuyuki (1432) | Lost 1-2 | -181401 |
| 3standard | 1593 | Itagaki, Ryuji (1667) | Won 2-0 | +231424 |
| 4standard | 1132 | Senba, Fuyuki (1483) | Won 2-0 | +191443 |
| 5standard | 942 | Higuchi, Akashi (1596) | Lost 0-2 | -151428 |
| 6standard | 1337 | Harano, Takahiro (1630) | Won 2-0 | +211449 |
| 7standard | 901 | Aihara, Shogaku (1543) | Lost 0-2 | -161433 |
| top | average opponent: 1548record: 3-4 | new rating: 1433 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 984 | Tani, Jyunnosuke (1500) | Lost 1-2 | -181472 |
| 2sealed | 1282 | Takahashi, Haruki (1483) | Lost 0-2 | -171455 |
| 3sealed | 1362 | Noto, Yoshinari (1422) | Lost 0-2 | -191436 |
| top | average opponent: 1468record: 0-3 | new rating: 1436 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 43 | Takano, Masaki (1634) | Won 2-0 | +211499 |
| 2modern | 247 | Ooneda, Yoshihiro (1558) | Won 2-0 | +191518 |
| 3modern | 191 | Sugimura, Yoshiyasu (1662) | Won 2-0 | +201538 |
| 4modern | 95 | Kimura, Daisuke (1442) | Lost 1-2 | -201518 |
| 5modern | 95 | Takeuchi, Ryota (1861) | Lost 0-2 | -121506 |
| 6modern | 343 | Goto, Daiki (1606) | Lost 1-2 | -161490 |
| top | average opponent: 1627record: 3-3 | new rating: 1490 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 259 | Yamamoto, Ryo (1500) | Won 2-0 | +181518 |
| 2sealed | 106 | Sakai, Yoshiki (1451) | Lost 0-2 | -191499 |
| 3sealed | 352 | Inoue, Yuusuke (1499) | Won 2-0 | +181517 |
| 4sealed | 265 | Matsuya, Rei (1473) | Lost 0-2 | -191498 |
| 5sealed | 288 | Yamamoto, Takashi (1370) | Lost 1-2 | -201478 |
| top | average opponent: 1459record: 2-3 | new rating: 1478 | ||