Koyama, Syun
Current rating: 1441
Record: 7-10
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1459 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 639 | Maki, Shuuichirou (1480) | Lost 0-2 | -181441 |
| top | record: 0-1 | new rating: 1441 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1477 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 522 | Nakazawa, Yuuji (1490) | Won 2-0 | +181495 |
| 2standard | 357 | Matsuyama, Hikaru (1436) | Lost 1-2 | -191476 |
| 3standard | 1077 | Ooike, Rinsei (1499) | Lost 0-2 | -171459 |
| top | average opponent: 1475record: 1-2 | new rating: 1459 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 9 | Sugai, Kouji (1448) | Won 1-0 | +171498 |
| 2sealed | 308 | Nakamura, Kouki (1399) | Lost 1-2 | -191479 |
| 3sealed | 1063 | Kishihara, Nobuaki (1498) | Lost 1-2 | -181461 |
| 4sealed | 1044 | Suzuki, Kouichirou (1482) | Won 2-0 | +181479 |
| 5sealed | 834 | Nakasato, Hiroki (1295) | Lost 1-2 | -211458 |
| 6sealed | 909 | Fukaya, Yuta (1456) | Won 2-0 | +181476 |
| 7sealed | 749 | Ootake, Masanori (1499) | Won 2-0 | +181494 |
| 8sealed | 534 | Yabumoto, Taroumaru (1525) | Lost 0-2 | -171477 |
| top | average opponent: 1450record: 4-4 | new rating: 1477 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2394 | Kasai, Yuuki (1500) | Lost 0-2 | -181482 |
| 2sealed | 2290 | Sakurai, Minaki (1481) | Won 2-1 | +181500 |
| 3sealed | 2400 | Matsushita, Takashi (1475) | Lost 0-2 | -181482 |
| 4sealed | 2386 | Minamino, Naoki (1482) | Won 2-0 | +181500 |
| 5sealed | 2329 | Katou, Takeru (1472) | Lost 0-2 | -191481 |
| top | average opponent: 1482record: 2-3 | new rating: 1481 | ||