Okumura, Masashi
Current rating: 1497
Record: 12-13-1
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1474 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 974 | Oshio, Hideyuki (1500) | Lost 0-2 | -181456 |
| 2standard | 958 | Hino, Koutarou (1482) | Won 2-0 | +191475 |
| 3standard | 1076 | Harada, Dampei (1705) | Won 2-1 | +221497 |
| 4standard | 1021 | Tran, Thien-Anh (1469) | Lost 1-2 | -191478 |
| 5standard | 1226 | Tomioka, Takahiro (1518) | Won 2-1 | +191497 |
| 6standard | 841 | Kobayashi, Masahiro (1475) | Won 2-0 | +181515 |
| 7standard | 342 | Miyamoto, Akihiro (1478) | Lost 0-2 | -191496 |
| 8standard | 820 | Sekimoto, Yasunari (1541) | Won 2-0 | +191515 |
| 9standard | 661 | Bang, Sangmun (1548) | Lost 0-2 | -181497 |
| top | average opponent: 1524record: 5-4 | new rating: 1497 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1530 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 485 | Sakagami, Taichi (1447) | Lost 1-2 | -191511 |
| 2standard | 924 | Tachibana, Korechika (1482) | Lost 0-2 | -191492 |
| 3standard | 1166 | Matsuo, Keisuke (1468) | Lost 0-2 | -181474 |
| top | average opponent: 1466record: 0-3 | new rating: 1474 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 104 | Yamasita, Akira (1500) | Won 2-1 | +191463 |
| 2sealed | 172 | Imai, Satoshi (1664) | Won 2-0 | +221485 |
| 3sealed | 13 | Hirayama, Atsushi (1684) | Lost 1-2 | -151470 |
| 4sealed | 151 | Kamakura, Jun (1510) | Won 2-1 | +191489 |
| 5sealed | 212 | Kato, Hiroki9832 (1538) | Won 2-1 | +191508 |
| 6sealed | 120 | Yoshihara, Tomoki (1658) | Won 2-0 | +211529 |
| 7sealed | 27 | Kozaki, Yosuke (1581) | Draw 1-1 | +11530 |
| 8sealed | 55 | Yoshida, Shintarou1488 (1543) | Won 2-0 | +181548 |
| 9sealed | 32 | Hamachiyo, Takahiro (1565) | Lost 1-2 | -181530 |
| top | average opponent: 1582record: 6-2-1 | new rating: 1530 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 903 | Sano, Toshirou (1500) | Lost 0-2 | -181482 |
| 2modern | 1111 | Takeshita, Masato (1480) | Lost 1-2 | -181464 |
| 3modern | 1240 | Iba, Tomoki (1463) | Won 2-0 | +181482 |
| 4modern | 1166 | Yamamoto, Takeshi (1478) | Lost 1-2 | -181464 |
| 5modern | 1131 | Mizutani, Yoshinobu (1368) | Lost 0-2 | -201444 |
| top | average opponent: 1458record: 1-4 | new rating: 1444 | ||