Okubo, Reo
Current rating: 1538
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1544 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 669 | Miyoshi, Nobumitsu (1436) | Won 2-1 | +161560 |
| 2standard | 644 | Nagashima, Toru (1488) | Won 2-0 | +171577 |
| 3standard | 682 | Takahashi, Jun (1476) | Lost 0-2 | -201557 |
| 4standard | 421 | Nanba, Yoshinori (1517) | Lost 1-2 | -191538 |
| top | average opponent: 1479record: 2-2 | new rating: 1538 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1568 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1305 | Ootsuka, Yuuji (1392) | Lost 0-2 | -211547 |
| 2sealed | 1310 | Makino, Hiroyuki (1478) | Won 2-1 | +161563 |
| 3sealed | 1102 | Kitahashi, Kichi (1501) | Lost 1-2 | -191544 |
| top | average opponent: 1457record: 1-2 | new rating: 1544 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1541 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 333 | Mizutani, Takuya (1482) | Lost 0-2 | -191522 |
| 3sealed | 462 | Nozawa, Yuusuke (1470) | Won 2-1 | +171539 |
| 4sealed | 381 | Takahashi, Miyabi (1462) | Won 2-1 | +171556 |
| 5sealed | 331 | Katsu, Masahiro (1382) | Won 2-1 | +151571 |
| 6sealed | 167 | Kasahara, Takuya (1519) | Won 2-0 | +171588 |
| 7sealed | 101 | Nakamura, Yuki (1472) | Lost 0-2 | -201568 |
| top | average opponent: 1464record: 4-2 | new rating: 1568 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 746 | Nakanishi, Yutaka (1444) | Won 2-0 | +171517 |
| 3modern | 793 | Terasawa, Kazuya (1667) | Lost 0-2 | -151502 |
| 4modern | 1033 | Tsuchiya, Yoshihiro (1386) | Lost 0-2 | -201482 |
| 5modern | 992 | Miyabe, Kouichi (1485) | Won 2-0 | +181500 |
| 6modern | 1004 | Fujita, Osamu (1755) | Lost 0-2 | -141486 |
| 7modern | 994 | Ihara, Akihiro (1390) | Won 2-1 | +161502 |
| 8modern | 910 | Tanabe, Takumi (1489) | Won 2-0 | +181520 |
| 9modern | 869 | Zhao, Tianyu (1701) | Won 2-0 | +211541 |
| top | average opponent: 1540record: 5-3 | new rating: 1541 | ||