Miyakoshi, Satoshi
Current rating: 1446
Record: 3-6
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 242 | Aoshima, Satoshi (1367) | Won 2-0 | +161479 |
| 2standard | 23 | Kibe, Keisuke (1528) | Lost 0-2 | -171462 |
| 3standard | 203 | Tsuyuki, Kouichi (1423) | Won 2-0 | +171479 |
| 4standard | 228 | Katsubayashi, Nobuhisa (1587) | Lost 0-2 | -161463 |
| 5standard | 216 | Hayashi, Masashi (1481) | Lost 1-2 | -171446 |
| average opponent: 1477record: 2-3 | new rating: 1446 | |||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 304 | Chen, Vince (1442) | Lost 1-2 | -191481 |
| 2sealed | 338 | Motoi, Kenichi (1508) | Lost 0-2 | -181463 |
| 3sealed | 459 | Matsuyama, Takenori (1411) | Won 2-1 | +171480 |
| 4sealed | 389 | Hayashi, Junki (1504) | Lost 1-2 | -171463 |
| average opponent: 1466record: 1-3 | new rating: 1463 | |||