Iwamoto, Takeshi
Current rating: 1429
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1458 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 47 | Sagae, Kazuki (1500) | Won 2-1 | +181476 |
| 2sealed | 234 | Matubayashi, Kazunori (1635) | Lost 1-2 | -151461 |
| 3sealed | 785 | Jinguu, Keiji (1470) | Won 2-1 | +181479 |
| 4sealed | 563 | Sugiura, Hiroki (1489) | Lost 1-2 | -171462 |
| 5sealed | 831 | Morioka, Ryota (1518) | Lost 0-2 | -171445 |
| 6sealed | 732 | Saito, Shosuke (1509) | Lost 1-2 | -171428 |
| 7sealed | 630 | Matsuzaki, Akira (1513) | Lost 1-2 | -171411 |
| 8sealed | 530 | Monzen, Hidetake (1408) | Won 2-0 | +181429 |
| top | average opponent: 1505record: 3-5 | new rating: 1429 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 177 | Kawamura, Shintaro (1516) | Lost 0-2 | -181499 |
| 2standard | 765 | Kiuchi, Takahiro (1462) | Lost 1-2 | -181481 |
| 3standard | 880 | Takami, Yuuta (1490) | Won 2-1 | +181499 |
| 4standard | 816 | Satoda, Keiki (1481) | Lost 0-2 | -181481 |
| 5standard | 865 | Hishida, Tomoya (1202) | Lost 0-2 | -231458 |
| top | average opponent: 1430record: 1-4 | new rating: 1458 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 920 | Mori, Masaki (1395) | Won 2-0 | +161516 |
| 2modern | 917 | Koga, Shinji (1518) | Lost 0-2 | -181498 |
| 3modern | 1138 | Ishino, Katsunori (1462) | Won 2-0 | +171515 |
| 4modern | 864 | Fukunaga, Keisuke (1565) | Won 2-1 | +191534 |
| 5modern | 851 | Nishitani, Yu (1533) | Lost 0-2 | -181516 |
| 6modern | 912 | Mizumoto, Hirotaka (1521) | Won 2-1 | +181534 |
| 7modern | 807 | Inui, Takashi (1591) | Lost 0-2 | -171517 |
| top | average opponent: 1512record: 4-3 | new rating: 1517 | ||