Kobayashi, Tatsuya
Current rating: 1464
Record: 8-12
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2342 | Motoi, Kenichi (1507) | Won 2-0 | +201431 |
| 2sealed | 2179 | Yagi, Hiroyuki (1532) | Won 2-1 | +201451 |
| 3sealed | 2109 | Schwenk, Ryan (1298) | Won 2-0 | +151466 |
| 4sealed | 2085 | Yoshihara, Yamato (1655) | Won 2-1 | +211487 |
| 5sealed | 2032 | Honda, Masakazu (1635) | Lost 1-2 | -151472 |
| 6sealed | 2095 | Matsubara, Ichiro (1735) | Lost 0-2 | -131459 |
| 7sealed | 2135 | Fukumoto, Tsuyoshi (1519) | Won 2-1 | +191478 |
| 8sealed | 2100 | Hirami, Tomonori (1732) | Lost 1-2 | -141464 |
| top | average opponent: 1577record: 5-3 | new rating: 1464 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1416 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 7 | Kikuchi, Shou (1500) | Won 2-1 | +201436 |
| 2standard | 109 | Kobayashi, Takahito (1546) | Lost 0-2 | -161420 |
| 3standard | 142 | Fujimoto, Yuki (1506) | Won 2-0 | +191439 |
| 4standard | 163 | Ino, Kentaro (1693) | Lost 1-2 | -131426 |
| 5standard | 318 | Juumonji, Ryou (1617) | Lost 1-2 | -151411 |
| top | average opponent: 1572record: 2-3 | new rating: 1411 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 85 | Date, Hiroshi (1548) | Lost 0-2 | -171451 |
| 2extended | 308 | Kitamura, Kazuhide (1482) | Lost 1-2 | -171434 |
| 3extended | 427 | Shigezumi, Manabu (1461) | Lost 1-2 | -181416 |
| top | average opponent: 1497record: 0-3 | new rating: 1416 | ||
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 107 | Okada, Wataru (1673) | Lost 0-2 | -151485 |
| 2sealed | 283 | Konoma, Nobuyuki (1484) | Lost 0-1 | -181467 |
| 3sealed | 269 | Iijima, Osamu (1463) | Won 2-1 | +181485 |
| 4sealed | 231 | Sasaki, Takashi (1516) | Lost 1-2 | -171468 |
| top | average opponent: 1534record: 1-3 | new rating: 1468 | ||