Koyama, Satoshi
Current rating: 1482
| Grand Prix Kobe 2017 (modern) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 660 | Mine, Ryunosuke (1435) | Lost 0-2 | -191500 |
| 2modern | 901 | Bushisue, Hidehiro (1482) | Lost 1-2 | -181482 |
| top | average opponent: 1459record: 0-2 | new rating: 1482 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 351 | Ikeda, Masahito (1506) | Won 2-0 | +191499 |
| 4standard | 257 | Tateno, Takayuki (1602) | Won 2-1 | +201519 |
| 5standard | 69 | Masuda, Tomohito (1477) | Won 2-1 | +171536 |
| 6standard | 44 | Kuroda, Masashiro (1866) | Lost 0-2 | -121524 |
| 7standard | 212 | Miyawaki, Yuto (1524) | Won 2-0 | +181542 |
| 8standard | 71 | Sakurai, Itu'Sei (1542) | Lost 1-2 | -181524 |
| 9standard | 154 | Kauf, Jamin (1848) | Lost 1-2 | -121512 |
| 10standard | 263 | Kojima, Tatuya (1783) | Won 2-1 | +221534 |
| 11standard | 289 | Mori, Takeshi (1698) | Lost 1-2 | -151519 |
| top | average opponent: 1650record: 5-4 | new rating: 1519 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 301 | Kimura, Terutaka (1500) | Won 2-1 | +181518 |
| 2sealed | 153 | Kimura, Yusuke (1501) | Won 2-1 | +181536 |
| 3sealed | 205 | Syuto, Yuji (1537) | Lost 1-2 | -181518 |
| 4sealed | 316 | Inagaki, Yukihiro (1601) | Lost 0-2 | -171501 |
| 5sealed | 365 | Abe, Masahide (1330) | Draw 1-1 | -31498 |
| 6sealed | 337 | Itou, Masayoshi (1517) | Lost 0-2 | -181480 |
| top | average opponent: 1498record: 2-3-1 | new rating: 1480 | ||