Sakakibara, Hisashi
Current rating: 1561
Record: 10-7
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 584 | Hori, Masataka (1727) | Won 2-0 | +211541 |
| 2sealed | 412 | Kamioka, Masayuki (1614) | Won 2-1 | +201561 |
| 3sealed | 65 | Nakai, Tomoki (1720) | Lost 0-2 | -151546 |
| 4sealed | 535 | Usuki, Goichi (1521) | Won 2-0 | +171563 |
| 5sealed | 319 | Karasawa, Ryuichi (1629) | Lost 0-2 | -171546 |
| 6sealed | 408 | Mizoguchi, Satoru (1431) | Won 2-0 | +161562 |
| 7sealed | 404 | Okada, Kou (1567) | Won 2-0 | +181580 |
| 8sealed | 129 | Yoshida, Kenji (1479) | Lost 1-2 | -191561 |
| average opponent: 1586record: 5-3 | new rating: 1561 | |||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 322 | Suzuki, Takuya (1546) | Won 2-0 | +191519 |
| 2sealed | 402 | Suzuki, Yuuhei (1362) | Won 2-1 | +151534 |
| 3sealed | 120 | Yoshida, Akihiko (1486) | Lost 0-2 | -191515 |
| 4sealed | 409 | Honda, Atsuo (1655) | Lost 0-2 | -151500 |
| 5sealed | 613 | Ogata, Nobuhiko (1593) | Won 2-1 | +191519 |
| 6sealed | 628 | Suga, Hiroki (1532) | Won 2-0 | +191538 |
| 7sealed | 399 | Fukaya, Yuta (1391) | Lost 0-2 | -211517 |
| 8sealed | 476 | Saito, Yuki (1587) | Lost 0-2 | -171500 |
| 9sealed | 543 | Nishikawa, Haruyoshi (1584) | Won 2-0 | +201520 |
| average opponent: 1526record: 5-4 | new rating: 1520 | |||