Hayamizu, Akira
Current rating: 1440
Record: 16-20-1
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1412 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 233 | Takashima, Ryuichi (1373) | Won 2-0 | +171429 |
| 3pioneer | 88 | Kutsuna, Yohei (1589) | Won 2-0 | +211450 |
| 4pioneer | 13 | Watanabe, Kohei (1556) | Lost 0-2 | -161434 |
| 5pioneer | 272 | Nakamura, Kazuhiro (1662) | Lost 1-2 | -141420 |
| 6pioneer | 441 | Furuta, Masayuki (1414) | Lost 1-2 | -181402 |
| 7pioneer | 440 | Shibue, Takahiro (1288) | Won 2-0 | +161418 |
| 8pioneer | 345 | Ichikawa, Shoichi (1647) | Won 2-1 | +221440 |
| top | average opponent: 1504record: 4-3 | new rating: 1440 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 230 | Odachi, Takuhei (1579) | Lost 1-2 | -161468 |
| 3standard | 532 | Yamashita, Kohji (1187) | Lost 1-2 | -231445 |
| 4standard | 643 | Chang, Cheng Yu (1651) | Won 2-1 | +221467 |
| 5standard | 548 | Nakamura, Yuya (1552) | Lost 0-2 | -171450 |
| 6standard | 610 | Hashimoto, Keisuke6106 (1456) | Lost 0-2 | -181432 |
| 7standard | 591 | Furukawa, Takehito (1310) | Lost 0-2 | -201412 |
| 8standard | 516 | Hara, Takashi (1395) | Draw 0-0 | 01412 |
| top | average opponent: 1447record: 1-5-1 | new rating: 1412 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 218 | Hasebe, Hironobu (1637) | Lost 1-2 | -161522 |
| 3modern | 934 | Mizuno, Takeshi (1523) | Lost 1-2 | -181504 |
| 4modern | 1111 | Tamura, Yuta (1480) | Won 2-1 | +181522 |
| 5modern | 867 | Eto, Junpei (1420) | Lost 0-2 | -201502 |
| 6modern | 789 | Morishima, Ryouta (1461) | Lost 1-2 | -191483 |
| 7modern | 751 | Tsutazawa, Hiroshi (1500) | Won 2-0 | +181501 |
| 8modern | 607 | Nakashima, Ryo (1536) | Lost 0-2 | -171484 |
| top | average opponent: 1508record: 2-5 | new rating: 1484 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 410 | Tsukitani, Takashi (1490) | Won 2-1 | +171552 |
| 2standard | 381 | Matsuyama, Ryousuke (1737) | Won 2-1 | +221574 |
| 3standard | 286 | Wada, Yuki (1919) | Won 2-1 | +241598 |
| 4standard | 178 | Matsuura, Shuhei (1430) | Lost 0-2 | -211577 |
| 5standard | 291 | Itsukushima, Shun (1537) | Lost 0-2 | -191558 |
| 6standard | 427 | Sano, Takumi (1388) | Lost 1-2 | -211537 |
| 7standard | 485 | Saito, Shinnosuke (1543) | Won 2-0 | +181555 |
| 8standard | 387 | Itou, Takanori (1633) | Lost 1-2 | -171538 |
| top | average opponent: 1585record: 4-4 | new rating: 1538 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 425 | Iwatou, Kodai (1424) | Won 2-1 | +171517 |
| 2standard | 522 | Iwata, Ryoji (1396) | Won 2-0 | +151532 |
| 3standard | 192 | Teramoto, Tsubasa (1479) | Lost 1-2 | -191513 |
| 4standard | 464 | Ohki, Tatsuhiko (1837) | Lost 1-2 | -121501 |
| 5standard | 859 | Tokairin, Taishi (1389) | Lost 1-2 | -201481 |
| 6standard | 852 | Furuuchi, Yusuke (1422) | Won 2-0 | +171498 |
| 7standard | 616 | Murakami, Kohei (1485) | Won 2-1 | +181516 |
| 8standard | 496 | Tsuchiya, Ryuichi (1586) | Won 2-0 | +191535 |
| top | average opponent: 1502record: 5-3 | new rating: 1535 | ||