Ishiyama, Yuuzou
Current rating: 1498
Record: 7-8
| Regional Championships Chiba 2023 (pioneer) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 79 | Tanaka, Shun (1411) | Won 2-1 | +171518 |
| 2pioneer | 32 | Yamamura, Shouma (1581) | Lost 1-2 | -171501 |
| 3pioneer | 58 | Fujimoto, Tomoya (1495) | Won 2-1 | +181519 |
| 4pioneer | 33 | Omori, Ken'ichirou (1789) | Lost 1-2 | -131506 |
| 5pioneer | 72 | Nakayama, Satoshi (1537) | Won 2-0 | +181524 |
| 6pioneer | 27 | Horiuchi, Makoto (1810) | Lost 1-2 | -131511 |
| 7pioneer | 62 | Nakamichi, Daisuke (1798) | Lost 0-2 | -131498 |
| average opponent: 1632record: 3-4 | new rating: 1498 | |||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 317 | Ono, Shoichi (1626) | Won 2-0 | +201520 |
| 2sealed | 105 | Inoue, Keita (1502) | Lost 0-2 | -181502 |
| 3sealed | 765 | Kakinoki, Junichi (1557) | Lost 0-2 | -171485 |
| 4sealed | 928 | Kyoumoto, Takeru (1257) | Won 2-1 | +141499 |
| 5sealed | 757 | Furutani, Yamato (1446) | Won 2-1 | +171516 |
| 6sealed | 437 | Mitani, Takahiro (1504) | Lost 0-2 | -181498 |
| 7sealed | 703 | Nanba, Yoshinori (1497) | Won 2-0 | +181516 |
| 8sealed | 625 | Floch, Ivan (1721) | Lost 0-2 | -151501 |
| average opponent: 1514record: 4-4 | new rating: 1501 | |||