Tamaki, Ryuta
Current rating: 1448
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 617 | Hirayama, Kou (1500) | Won 2-0 | +181504 |
| 2sealed | 220 | Hayashi, Hisaaki (1440) | Lost 1-2 | -191485 |
| 3sealed | 701 | Takahashi, Koji (1390) | Lost 0-2 | -191466 |
| 4sealed | 819 | Takeda, Yuki 3088 (1481) | Lost 1-2 | -181448 |
| top | average opponent: 1453record: 1-3 | new rating: 1448 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 439 | Yuda, Shogo (1489) | Won 2-0 | +191482 |
| 2sealed | 183 | Cho, Won-Jun (1576) | Lost 0-2 | -161466 |
| 3sealed | 945 | Kobayashi, Yuta (1408) | Lost 0-2 | -201446 |
| 4sealed | 1028 | Kuroyanagi, Hirohito (1315) | Won 2-0 | +161462 |
| 5sealed | 887 | Ikeda, Junichi (1502) | Lost 1-2 | -171445 |
| 6sealed | 871 | Suzuki, Kazuhiro (1374) | Won 2-0 | +171462 |
| 7sealed | 670 | Kawamata, Daisuke (1610) | Won 2-0 | +201482 |
| 8sealed | 651 | Oota, Nobuyuki (1595) | Won 2-1 | +201502 |
| 9sealed | 267 | Takao, Akinao (1609) | Lost 0-2 | -161486 |
| top | average opponent: 1497record: 5-4 | new rating: 1486 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 193 | Abe, Daiya (1500) | Lost 0-2 | -181482 |
| 2standard | 1001 | Ishikawa, Ryota (1453) | Lost 1-2 | -191463 |
| 3standard | 1587 | Sizuku, Tomoya (1452) | Lost 0-2 | -181445 |
| 4standard | 1581 | Mizui, Tomoyuki (1447) | Won 2-1 | +181463 |
| 5standard | 1414 | Takano, Shota (1463) | Lost 0-2 | -181445 |
| 6standard | 1382 | MoriMotogo, Junichi (1450) | Won 2-0 | +181463 |
| top | average opponent: 1461record: 2-4 | new rating: 1463 | ||