Kouroku, Hikaru
Current rating: 1461
Record: 4-6-1
| Grand Prix Yokohama 2019 (modern) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 407 | Oshimi, Akira (1454) | Lost 0-2 | -191496 |
| 2modern | 965 | Tanabe, Takumi (1570) | Lost 0-2 | -171479 |
| 3modern | 1104 | Nakamigawa, Kensuke (1447) | Lost 1-2 | -181461 |
| average opponent: 1490record: 0-3 | new rating: 1461 | |||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 885 | Muralitheran, Hari (1396) | Won 2-0 | +161516 |
| 2standard | 346 | Hayashi, Kensuke (1467) | Draw 1-1 | -11515 |
| 3standard | 763 | Sanz, Alex (1518) | Won 2-0 | +181533 |
| 4standard | 408 | Sato, Jungo (1470) | Lost 0-2 | -191514 |
| 5standard | 735 | Kawakami, Kazumitsu (1519) | Lost 1-2 | -181496 |
| 6standard | 1007 | Oikawa, Takaaki (1520) | Won 2-1 | +191515 |
| 7standard | 709 | Hirokawa, Tatsuya (1587) | Won 2-0 | +191534 |
| 8standard | 474 | Taniguchi, Yu (1484) | Lost 0-2 | -191515 |
| average opponent: 1495record: 4-3-1 | new rating: 1515 | |||