Tahara, Hideaki
Current rating: 1365
Record: 4-13
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1394 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 145 | Kusuhara, Shutaro (1517) | Lost 0-2 | -161378 |
| 3standard | 636 | Mori, Takeshi (1663) | Lost 1-2 | -131365 |
| top | average opponent: 1590record: 0-2 | new rating: 1365 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1442 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 367 | Yamazaki, Takefumi (1451) | Lost 1-2 | -181424 |
| 3modern | 616 | Kikuchi, Takashi (1311) | Won 2-1 | +161440 |
| 4modern | 767 | Maeda, Dai (1464) | Lost 1-2 | -181422 |
| 5modern | 771 | Aoyagi, Motohiko (1638) | Lost 1-2 | -141408 |
| 6modern | 864 | Tanaka, Satosi (1461) | Won 2-0 | +191427 |
| 7modern | 660 | Nishimura, Shinji (1463) | Lost 0-2 | -171410 |
| 8modern | 634 | Aoki, Masahiro (1548) | Lost 0-2 | -161394 |
| top | average opponent: 1476record: 2-5 | new rating: 1394 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 178 | Saito, Naoki (1384) | Lost 0-2 | -191453 |
| 2standard | 705 | Kubota, Takeshi (1558) | Won 2-0 | +191472 |
| 3standard | 512 | Furuya, Youhei (1722) | Lost 1-2 | -131459 |
| 4standard | 833 | Saito, Ryo 6701 (1490) | Lost 0-2 | -171442 |
| top | average opponent: 1539record: 1-3 | new rating: 1442 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 251 | Nishikawa, Suguru (1447) | Won 2-0 | +171517 |
| 2sealed | 157 | Kawaguchi, Kyouhei (1812) | Lost 1-2 | -131504 |
| 3sealed | 668 | Moriya, Jun (1814) | Lost 0-2 | -121492 |
| 4sealed | 978 | Tabata, Ryuya (1405) | Lost 0-2 | -201472 |
| top | average opponent: 1619record: 1-3 | new rating: 1472 | ||