Yamamoto, Hirotaka
Current rating: 1386
Record: 4-11
| Grand Prix Yokohama 2019 (modern) | starting rating: 1408 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 526 | Ichino, Takahito (1608) | Lost 1-2 | -141394 |
| 2modern | 954 | Takaya, Akio (1445) | Lost 1-2 | -171377 |
| 3modern | 1050 | Kawabata, Kenta (1421) | Won 2-1 | +181395 |
| 4modern | 1084 | Inotsume, Ayumu (1487) | Lost 0-2 | -161379 |
| 5modern | 1042 | Yoshida, Shuhei (1506) | Lost 1-2 | -161363 |
| 6modern | 958 | Mogami, Yuko (1448) | Won 2-0 | +201383 |
| 7modern | 787 | Taira, Masashi (1435) | Won 2-0 | +191402 |
| 8modern | 625 | Anraku, Koutarou (1506) | Lost 1-2 | -161386 |
| average opponent: 1482record: 3-5 | new rating: 1386 | |||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1359 | Seki, Takayuki (1500) | Lost 0-2 | -181482 |
| 2sealed | 1344 | Uchida, Kenji (1427) | Lost 0-2 | -191463 |
| 3sealed | 1342 | Nakahara, Shouya (1429) | Lost 1-2 | -191444 |
| 4sealed | 1288 | Morita, Asahi (1445) | Won 2-0 | +181462 |
| 5sealed | 1215 | Ooshima, Kunihiro (1531) | Lost 0-2 | -161446 |
| 6sealed | 1155 | Yamauchi, Shotaro (1490) | Lost 0-2 | -181428 |
| 7sealed | 1093 | Maeda, Takayuki (1300) | Lost 0-2 | -201408 |
| average opponent: 1446record: 1-6 | new rating: 1408 | |||