Zenno, Kotaro
Current rating: 1512
Record: 9-10
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 636 | Yoshida, Naoki (1500) | Won 2-0 | +191465 |
| 2sealed | 306 | Jono, Rei (1496) | Lost 1-2 | -181447 |
| 3sealed | 832 | Rachi, Seiya (1500) | Won 2-0 | +191466 |
| 4sealed | 743 | Hirasawa, Daisuke (1560) | Won 2-1 | +201486 |
| 5sealed | 395 | Hoshina, Kohei (1420) | Won 2-0 | +171503 |
| 6sealed | 293 | Sochurek, Petr (2088) | Won 2-0 | +271530 |
| 7sealed | 162 | Takahashi, Kazuto (1579) | Won 2-0 | +191549 |
| 8sealed | 58 | Kimura, Yusuke (1655) | Won 2-0 | +201569 |
| 9sealed | 60 | Yoshino, Kohei (1705) | Lost 0-2 | -151554 |
| 10draft | 29 | Matsubara, Tohru (1801) | Lost 0-2 | -141540 |
| 11draft | 27 | Suzuki, Issei (1582) | Won 2-1 | +191559 |
| 12draft | 28 | Sasaki, Kensuke (1643) | Lost 1-2 | -171542 |
| 13draft | 35 | Tanaka, Syunya (1626) | Lost 0-2 | -161526 |
| 14draft | 181 | Nakano, Fumiki (1728) | Lost 1-2 | -141512 |
| average opponent: 1634record: 8-6 | new rating: 1512 | |||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 19 | Oda, Keigo (1501) | Lost 1-2 | -181482 |
| 2sealed | 790 | Miyamoto, Naoki (1501) | Won 2-0 | +181500 |
| 3sealed | 903 | Shinagawa, Kazunari (1477) | Lost 1-2 | -181482 |
| 4sealed | 833 | Akira, Shinkai (1484) | Lost 0-2 | -181464 |
| 5sealed | 922 | Itakura, Kenichi (1455) | Lost 0-2 | -181446 |
| average opponent: 1483record: 1-4 | new rating: 1446 | |||