Ishihama, Naoya
Current rating: 1479
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 3pioneer | 403 | Kitagawa, Hiroyuki (1556) | Lost 1-2 | -161459 |
| 4pioneer | 491 | Yamada, Yasushi (1651) | Lost 1-2 | -151444 |
| 5pioneer | 523 | Iwasaki, Masayuki (1564) | Lost 1-2 | -161428 |
| 6pioneer | 542 | Mutaguchi, Kazuya (1425) | Won 2-1 | +181446 |
| 7pioneer | 442 | Hishida, Tomoya (1273) | Won 2-0 | +151461 |
| 8pioneer | 274 | Tanaka, Takayuki (1460) | Won 2-1 | +181479 |
| top | average opponent: 1488record: 3-3 | new rating: 1479 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 245 | Hirose, Yuuki (1889) | Lost 0-2 | -101457 |
| 2sealed | 821 | Ogura, Tomomasa (1305) | Lost 0-2 | -211436 |
| 3sealed | 1016 | Nakai, Tomoki (1624) | Won 2-0 | +211457 |
| 4sealed | 956 | Kitakata, Atsushi (1484) | Won 2-0 | +191476 |
| 5sealed | 584 | Motoya, Toru (1392) | Won 2-0 | +161492 |
| 6sealed | 459 | Tamura, Kenji (1547) | Lost 1-2 | -171475 |
| top | average opponent: 1540record: 3-3 | new rating: 1475 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 363 | Aki, Kyoichi (1534) | Lost 1-2 | -171483 |
| 2standard | 520 | Doumoto, Satoru (1513) | Lost 0-2 | -181465 |
| 3standard | 898 | Okada, Kazuhiro (1465) | Lost 1-2 | -181447 |
| 4standard | 946 | Nakano, Atsushi (1569) | Lost 1-2 | -161431 |
| 5standard | 898 | Achagraisorn, Visrut (1425) | Won 2-0 | +181449 |
| 6standard | 747 | Maruno, Hiroki (1448) | Won 2-1 | +181467 |
| top | average opponent: 1492record: 2-4 | new rating: 1467 | ||