Yamakawa, Yoshiyuki
Current rating: 1482
Record: 7-8
| Grand Prix Kobe 2017 (modern) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 742 | Ootubo, Toshihiro (1485) | Won 2-1 | +181498 |
| 2modern | 416 | Uesugi, Fumiya (1553) | Lost 1-2 | -171481 |
| 3modern | 887 | Kahata, Issei (1415) | Won 2-1 | +171498 |
| 4modern | 762 | Iwasaki, Koichi (1488) | Won 2-0 | +181516 |
| 5modern | 381 | Yamamura, Yuma (1628) | Lost 0-2 | -161500 |
| 6modern | 838 | Masegi, Takeshi (1494) | Won 2-1 | +181518 |
| 7modern | 428 | Ishitsuka, Hiroyuki (1497) | Lost 1-2 | -181500 |
| 8modern | 668 | Yamaguchi, Fumiya (1516) | Lost 1-2 | -181482 |
| average opponent: 1509record: 4-4 | new rating: 1482 | |||
| Grand Prix Kobe 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1061 | Inukai, Yuta (1561) | Lost 0-2 | -171483 |
| 2modern | 1175 | Nishimoto, Ryota (1482) | Lost 1-2 | -181465 |
| 3modern | 1202 | Saka, Tomoaki (1341) | Won 2-0 | +161481 |
| 4modern | 1149 | Takemura, Yoshiyuki (1483) | Won 2-1 | +181499 |
| 5modern | 1069 | Chanboonyawat, Prapruet (1520) | Lost 0-2 | -181481 |
| 6modern | 1081 | Koizumi, Hiroki (1464) | Won 2-1 | +181499 |
| 7modern | 1015 | Umeki, Ryo (1466) | Lost 1-2 | -191480 |
| average opponent: 1474record: 3-4 | new rating: 1480 | |||