Kobayakawa, Yu
Current rating: 1492
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 192 | Maeda, Norihito (1643) | Won 2-1 | +211491 |
| 2standard | 275 | Meki, Syunta (1542) | Lost 1-2 | -171474 |
| 3standard | 653 | Oonishi, Tomokazu (1465) | Lost 1-2 | -181456 |
| 4standard | 710 | Tanaka, Junichi 677 (1484) | Won 2-0 | +181474 |
| 5standard | 619 | Tamura, Youhei6302 (1424) | Won 2-0 | +181492 |
| 6standard | 359 | Hatakeyama, Dai (1469) | Won 2-0 | +171509 |
| 7standard | 302 | Shinada, Ren (1537) | Lost 1-2 | -171492 |
| top | average opponent: 1509record: 4-3 | new rating: 1492 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 212 | Motoi, Kenichi (1526) | Won 2-1 | +181501 |
| 2sealed | 56 | Nishiura, Ryosuke (1436) | Lost 1-2 | -191482 |
| 3sealed | 218 | Ootake, Takafumi (1543) | Won 2-1 | +191501 |
| 4sealed | 168 | Kinoshita, Masashi (1762) | Lost 0-2 | -131488 |
| 5sealed | 349 | Takahashi, Miyabi (1498) | Lost 1-2 | -181470 |
| top | average opponent: 1553record: 2-3 | new rating: 1470 | ||
| Grand Prix Shizuoka 2001 (ODY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 17 | Ikenuma, Noboru (1500) | Won 2-1 | +181518 |
| 2sealed | 149 | Yasufuku, Akihiro (1500) | Draw 1-1 | 01518 |
| 3sealed | 129 | Ichikawa, Masato (1500) | Lost 0-2 | -191499 |
| 4sealed | 192 | Ura, Tsuyoshi (1565) | Lost 0-2 | -161483 |
| top | average opponent: 1516record: 1-2-1 | new rating: 1483 | ||