Yamakawa, Kiyozumi
Current rating: 1414
Record: 5-10-1
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 27 | Naito, Yoshiyuki (1444) | Lost 0-2 | -181448 |
| 2standard | 473 | Sasahara, Yuta (1397) | Won 2-0 | +171465 |
| 3standard | 575 | Iwasawa, Fumiya (1666) | Lost 0-2 | -141451 |
| 4standard | 735 | Tanabe, Takumi (1555) | Won 2-1 | +201471 |
| 5standard | 661 | Takeda, Ryosuke (1422) | Lost 1-2 | -191452 |
| 6standard | 602 | Yamamura, Shouma (1466) | Lost 0-2 | -181434 |
| 7standard | 583 | Tomiyama, Shin (1349) | Lost 0-2 | -201414 |
| average opponent: 1471record: 2-5 | new rating: 1414 | |||
| Grand Prix Kobe 2017 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 108 | Akagawa, Syun (1500) | Won 2-1 | +181518 |
| 2modern | 79 | Takisaka, Toru (1633) | Lost 1-2 | -161502 |
| 3modern | 706 | Nakane, Takumi (1499) | Draw 1-1 | 01502 |
| 4modern | 924 | Itikawa, Shinichi (1510) | Lost 1-2 | -181484 |
| 5modern | 1080 | Kawa, Hirokazu (1422) | Won 2-1 | +171501 |
| 6modern | 859 | Fujihira, Kohei (1545) | Lost 0-2 | -171484 |
| 7modern | 980 | Wong, Andrew (1432) | Won 2-0 | +171501 |
| 8modern | 786 | Xia, Chris (1581) | Lost 0-2 | -171484 |
| 9modern | 757 | Isomura, Takuya (1484) | Lost 0-2 | -181466 |
| average opponent: 1512record: 3-5-1 | new rating: 1466 | |||