Katayama, Chiharu
Current rating: 1446
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 351 | Takenaka, Tsuyoshi (1555) | Won 2-0 | +181537 |
| 2standard | 90 | Maeda, Norihito (1518) | Lost 1-2 | -181519 |
| 3standard | 565 | Haratake, Noriyuki (1478) | Lost 0-2 | -191500 |
| 4standard | 839 | Kung, Lam Yan (1496) | Lost 0-2 | -181482 |
| 5standard | 850 | Matumoto, Yuusuke (1463) | Lost 1-2 | -181464 |
| 6standard | 757 | Kato, Yoshiaki (1450) | Lost 1-2 | -181446 |
| top | average opponent: 1493record: 1-5 | new rating: 1446 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 389 | Higashimori, Kazunori (1431) | Won 2-0 | +161534 |
| 2standard | 419 | Yasufuku, Akihiro (1467) | Won 2-1 | +171551 |
| 3standard | 259 | Takahasi, Yuta5171 (1634) | Lost 1-2 | -161535 |
| 4standard | 734 | Otani, Kodai (1505) | Lost 1-2 | -191516 |
| 5standard | 850 | Araki, Ryusuke (1464) | Lost 1-2 | -191497 |
| 6standard | 868 | Sato, Kazuhito (1389) | Won 2-0 | +161513 |
| 7standard | 719 | Ozawa, Yoshimasa (1579) | Won 2-0 | +191532 |
| 8standard | 583 | Usui, Haruki (1776) | Lost 0-2 | -131519 |
| top | average opponent: 1531record: 4-4 | new rating: 1519 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 120 | Ooura, Masaki (1500) | Won 2-0 | +181518 |
| 2standard | 125 | Tanimoto, Akinari (1487) | Lost 0-2 | -191499 |
| 3standard | 1000 | Yamada, Yuuki (1364) | Lost 0-2 | -201479 |
| 4standard | 1032 | Miyasaka, Masato (1481) | Won 2-0 | +181497 |
| 5standard | 787 | Sugisawa, Tsuyoshi (1562) | Won 2-0 | +191516 |
| 6standard | 586 | Kajiwara, Shou (1705) | Lost 1-2 | -141502 |
| 7standard | 585 | Narita, Chisato (1439) | Lost 1-2 | -201482 |
| 8standard | 598 | Kobayashi, Haruka (1481) | Won 2-0 | +181500 |
| 9standard | 420 | Brazil, Isaac (1466) | Won 2-1 | +181518 |
| top | average opponent: 1499record: 5-4 | new rating: 1518 | ||