Ohtsu, Hayato
Current rating: 1426
Record: 15-20
| Grand Prix Yokohama 2019 (modern) | starting rating: 1389 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 680 | Takano, Kantaro (1382) | Lost 0-2 | -191370 |
| 2modern | 613 | Sato, Ryo 4541 (1483) | Won 2-0 | +201390 |
| 3modern | 674 | Yajima, Hiromichi (1564) | Won 2-0 | +221412 |
| 4modern | 631 | Kurioka, Makoto (1518) | Lost 1-2 | -161396 |
| 5modern | 713 | Takeda, Yuki 3088 (1494) | Won 2-0 | +191415 |
| 6modern | 603 | Abe, Kodai (1556) | Won 2-1 | +211436 |
| 7modern | 410 | Usui, Syou (1889) | Lost 1-2 | -101426 |
| top | average opponent: 1555record: 4-3 | new rating: 1426 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1459 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 480 | Fukuji, Yuta (1537) | Lost 1-2 | -161443 |
| 2legacy | 598 | Un'No, Akihiro (1444) | Lost 0-2 | -181425 |
| 3legacy | 1043 | Toyokawa, Kei (1463) | Lost 1-2 | -181407 |
| 4legacy | 1159 | Ohshiba, Atsushi (1362) | Lost 1-2 | -181389 |
| top | average opponent: 1452record: 0-4 | new rating: 1389 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1458 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1137 | Takahashi, Kenta (1443) | Lost 0-2 | -181440 |
| 2sealed | 1412 | Katayama, Syun (1482) | Won 2-0 | +181458 |
| 3sealed | 1095 | Takamizawa, Shigeyoshi (1414) | Won 2-0 | +181476 |
| 4sealed | 989 | Utsumi, Takayuki (1559) | Lost 0-2 | -171459 |
| top | average opponent: 1475record: 2-2 | new rating: 1459 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 207 | Ueno, Takahiro (1467) | Won 2-1 | +181513 |
| 2sealed | 110 | Fong, Chun Ho (1449) | Lost 0-2 | -191494 |
| 3sealed | 352 | Sato, Yutaro (1501) | Lost 0-2 | -181476 |
| 4sealed | 457 | Kubota, Muneaki (1480) | Lost 0-2 | -181458 |
| top | average opponent: 1474record: 1-3 | new rating: 1458 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 85 | Nakao, Munenari (1666) | Lost 0-2 | -161498 |
| 2standard | 260 | Kawamura, Hirotaka (1482) | Lost 0-2 | -181480 |
| 3standard | 398 | Konagaya, Yuichi (1467) | Won 2-1 | +181498 |
| 4standard | 383 | Honjo, Shuya (1557) | Won 2-1 | +191517 |
| 5standard | 286 | Takahashi, Tomoo (1391) | Won 2-0 | +161533 |
| 6standard | 166 | Katau, Yoshito (1541) | Lost 1-2 | -181515 |
| 7standard | 208 | Matsuda, Kenji (1438) | Lost 1-2 | -201495 |
| top | average opponent: 1506record: 3-4 | new rating: 1495 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 787 | K., Akinori (1500) | Lost 1-2 | -181482 |
| 2sealed | 1012 | Morita, Akira (1484) | Lost 0-2 | -181464 |
| 3sealed | 1123 | Karasawa, Satoshi (1464) | Won 2-0 | +181482 |
| 4sealed | 1057 | Kageshima, Toshiaki (1489) | Won 2-1 | +181500 |
| 5sealed | 916 | Barreto, Carlos (1502) | Won 2-0 | +181518 |
| 6sealed | 942 | Choi, Young-Il (1302) | Won 2-1 | +141532 |
| 7sealed | 815 | Suzuki, Mikito (1487) | Lost 0-2 | -191513 |
| 8sealed | 994 | Amao, Hiroshi (1562) | Lost 1-2 | -171496 |
| 9sealed | 975 | Toyama, Satoshi (1462) | Won 2-1 | +181514 |
| top | average opponent: 1472record: 5-4 | new rating: 1514 | ||