Kobayashi, Kouji
Current rating: 1510
Record: 15-15-1
| MagicCon Las Vegas 2023 Limited Open (WOE limited) | starting rating: 1530 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 3721 | Rapp, John (1500) | Lost 1-2 | -191511 |
| 2sealed | 3735 | Giguere, Ismael (1486) | Won 2-1 | +181529 |
| 3sealed | 3358 | Turner, Buddy (1501) | Lost 1-2 | -191510 |
| top | average opponent: 1496record: 1-2 | new rating: 1510 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 538 | Ishikawa, Takuma (1404) | Won 2-1 | +161534 |
| 2sealed | 560 | Hirai, Masumi (1318) | Won 2-0 | +141548 |
| 3sealed | 554 | Takeda, Hiroki (1611) | Draw 1-1 | +11549 |
| 4sealed | 603 | Tamai, Hideaki (1561) | Won 2-0 | +181567 |
| 5sealed | 555 | Kawasaki, Keita (1576) | Lost 0-2 | -181549 |
| 6sealed | 627 | Inagaki, Yukihiro (1458) | Lost 0-2 | -191530 |
| top | average opponent: 1488record: 3-2-1 | new rating: 1530 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 650 | Kobayashi, Makoto (1497) | Won 2-0 | +181501 |
| 2standard | 650 | Ito, Hiromichi (1443) | Won 2-0 | +171518 |
| 3standard | 686 | Lemmon, Andrew (1446) | Won 2-0 | +161534 |
| 4standard | 530 | Emori, Shinichi (1509) | Won 2-1 | +181552 |
| 5standard | 503 | Inui, Jun (1573) | Won 2-0 | +181570 |
| 6standard | 523 | Ishiguro, Satoshi0631 (1530) | Lost 0-2 | -181552 |
| 7standard | 562 | Yamakawa, Akihiro (1566) | Lost 0-2 | -181534 |
| 8standard | 605 | Uno, Yuki (1625) | Lost 1-2 | -161518 |
| top | average opponent: 1524record: 5-3 | new rating: 1518 | ||
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 1597 | Lynn, Nicholas (1951) | Lost 0-2 | -101479 |
| 5sealed | 1420 | Eakle, Jake (1463) | Won 2-1 | +181497 |
| 6sealed | 1011 | Yoo, Bradley (1719) | Lost 1-2 | -141483 |
| top | average opponent: 1711record: 1-2 | new rating: 1483 | ||
| Grand Prix Seattle-Tacoma 2012 (DKA limited) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 95 | Baranov, Alex (1500) | Won 2-0 | +181487 |
| 2sealed | 165 | Goff, Robert (1442) | Won 2-0 | +171504 |
| 3sealed | 70 | Warner, Drew M (1588) | Won 2-1 | +201524 |
| 4sealed | 69 | Pitzer, Matthew (1541) | Won 2-1 | +181542 |
| 5sealed | 11 | Johnson, Jesse (1527) | Lost 0-2 | -181524 |
| 6sealed | 84 | Johnston, Kiel T (1567) | Lost 0-2 | -171507 |
| 7sealed | 193 | Preciado, Anthony (1520) | Lost 1-2 | -181489 |
| top | average opponent: 1526record: 4-3 | new rating: 1489 | ||
| Grand Prix Hiroshima 2006 (CSP limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 45 | Kataoka, Asami (1589) | Lost 1-2 | -161484 |
| 3sealed | 114 | Tomiyasu, Yosuke (1491) | Lost 0-2 | -181466 |
| 4sealed | 153 | Suginaka, Takaaki (1431) | Won 2-1 | +171483 |
| 5sealed | 113 | Nishimura, Norihito (1681) | Lost 1-2 | -141469 |
| top | average opponent: 1548record: 1-3 | new rating: 1469 | ||