Kobayashi, Hiroaki
Current rating: 1388
Record: 11-20-1
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1415 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 299 | Tokida, Kenta (1500) | Won 2-0 | +201435 |
| 2sealed | 4 | Hayakawa, Sho (1579) | Lost 0-2 | -161419 |
| 3sealed | 870 | Fukui, Kouichirou (1460) | Won 2-1 | +191438 |
| 4sealed | 699 | Ookawa, Yuya (1514) | Lost 0-2 | -171421 |
| 5sealed | 794 | Azuma, Nobuaki (1515) | Lost 0-2 | -161405 |
| 6sealed | 830 | Isomura, Takuya (1467) | Lost 0-2 | -171388 |
| top | average opponent: 1506record: 2-4 | new rating: 1388 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1382 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 513 | Emori, Shinichi (1598) | Lost 1-2 | -141368 |
| 3sealed | 861 | Naka, Keiji (1574) | Lost 1-2 | -141354 |
| 4sealed | 888 | Sekine, Naoto (1748) | Draw 1-1 | +61360 |
| 5sealed | 985 | Adachi, Takaaki (1485) | Won 2-0 | +211381 |
| 6sealed | 777 | Takeshita, Yuuki (1482) | Won 2-0 | +201401 |
| 7sealed | 553 | Ikeda, Masahito (1483) | Won 2-0 | +191420 |
| 8sealed | 377 | Yoda, Yuuki (1449) | Won 2-0 | +191439 |
| 9sealed | 251 | Kawaguchi, Kenji (1663) | Won 2-0 | +221461 |
| 10draft | 279 | Maeda, Yasuyuki (1640) | Lost 1-2 | -151446 |
| 11draft | 129 | Itodani, Tetsurou (1614) | Lost 1-2 | -151431 |
| 12draft | 202 | Yamamoto, Kento (1560) | Lost 0-2 | -161415 |
| top | average opponent: 1572record: 5-5-1 | new rating: 1415 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 2057 | Arahata, Yuusuke (1518) | Won 2-0 | +201431 |
| 3sealed | 2182 | Ota, Masato (1587) | Lost 1-2 | -151416 |
| 4sealed | 2214 | Tanaka, Jun'ichi (1423) | Lost 0-2 | -181398 |
| 5sealed | 2340 | Hosokouji, Noriyuki (1499) | Lost 0-2 | -161382 |
| top | average opponent: 1507record: 1-3 | new rating: 1382 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1425 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 525 | Murase, Tatsuya (1518) | Won 2-0 | +201445 |
| 3sealed | 600 | Tanji, Kensuke (1493) | Lost 1-2 | -171428 |
| 4sealed | 653 | Matushita, Masakazu (1524) | Lost 0-2 | -171411 |
| top | average opponent: 1512record: 1-2 | new rating: 1411 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 194 | Haraldsson, Hedinn (1544) | Lost 0-2 | -171483 |
| 2standard | 353 | Shimono, Tetsuro (1456) | Lost 1-2 | -191464 |
| 3standard | 336 | Kido, Takayoshi (1465) | Won 2-0 | +181482 |
| 4standard | 354 | Shibuya, Tsutomu (1491) | Lost 0-2 | -171465 |
| 5standard | 313 | Tanaka, Toshinori (1432) | Lost 0-2 | -191446 |
| 6standard | 300 | Iioka, Kenta (1371) | Lost 0-2 | -191427 |
| 7standard | 255 | Okuda, Koushi (1336) | Lost 1-2 | -201407 |
| 8standard | 211 | Nishizawa, Tsuneyoshi (1409) | Won 2-0 | +181425 |
| top | average opponent: 1438record: 2-6 | new rating: 1425 | ||