Kobayashi, Keita
Current rating: 1526
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1564 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 131 | Zhu, Jia Nan (1537) | Lost 0-2 | -191545 |
| 2standard | 500 | Yoshimaru, Ryo (1482) | Won 2-0 | +171562 |
| 3standard | 489 | Yamashiro, Junji (1495) | Lost 0-2 | -191543 |
| 4standard | 726 | Kawahama, Yoshikazu (1604) | Lost 0-2 | -171526 |
| top | average opponent: 1529record: 1-3 | new rating: 1526 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1574 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 116 | Yamashita, Takahiro (1561) | Won 2-1 | +181592 |
| 2standard | 233 | Yagi, Tatuya (1518) | Lost 1-2 | -201572 |
| 3standard | 614 | Tanaka, Mami (1279) | Won 2-1 | +131585 |
| 4standard | 446 | Naono, Shuichi (1410) | Won 2-1 | +151600 |
| 5standard | 134 | Hiyama, Syunsuke (1711) | Lost 0-2 | -161584 |
| 6standard | 609 | Yokumichi, Jun (1472) | Lost 0-2 | -201564 |
| top | average opponent: 1492record: 3-3 | new rating: 1564 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 732 | Kaneko, Kentaro (1516) | Won 2-0 | +181499 |
| 2sealed | 18 | Naide, Kazutaka (1461) | Lost 1-2 | -181481 |
| 3sealed | 675 | Natsumi, Kazuki (1498) | Won 2-0 | +181499 |
| 4sealed | 770 | Ikebe, Takahiro (1479) | Won 2-1 | +181517 |
| 5sealed | 373 | Sasaki, Yusuke 6248 (1537) | Lost 0-2 | -181499 |
| 6sealed | 618 | Abe, Takashi (1561) | Won 2-1 | +191518 |
| 7sealed | 353 | Hayashi, Tetsuo (1555) | Won 2-1 | +191537 |
| 8sealed | 246 | Ohbayashi, Shotaro (1502) | Won 2-1 | +171554 |
| 9sealed | 152 | Yoshizawa, Masaru (1645) | Won 2-1 | +201574 |
| 10draft | 35 | Yamamoto, Shinya (1632) | Lost 0-2 | -171557 |
| 11draft | 122 | Ishizaka, Akira (1488) | Won 2-0 | +171574 |
| 12draft | 118 | Ikenoko, Hidehiro (1564) | Won 2-1 | +171591 |
| 13draft | 220 | Hirayama, Shigetaka (1620) | Lost 1-2 | -171574 |
| top | average opponent: 1543record: 9-4 | new rating: 1574 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 686 | Ebara, Satoshi (1425) | Lost 0-2 | -191481 |
| top | record: 0-1 | new rating: 1481 | ||