Oikawa, Takaaki
Current rating: 1563
Record: 38-33-2
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1596 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 342 | Tomiyama, Shin (1393) | Won 2-0 | +141610 |
| 2standard | 150 | Ogsawara, Akira (1345) | Lost 1-2 | -231587 |
| 3standard | 540 | Saito, Shogo (1509) | Lost 0-2 | -191568 |
| 4standard | 772 | Kondo, Hiromi (1495) | Won 2-0 | +171585 |
| 5standard | 580 | Murase, Tatsuya (1382) | Lost 1-2 | -221563 |
| top | average opponent: 1425record: 2-3 | new rating: 1563 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1559 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 88 | Andou, Masahito (1584) | Won 2-1 | +181577 |
| 2sealed | 134 | Ogiwara, Ryoichi (1509) | Won 2-0 | +171594 |
| 3sealed | 438 | Kasuga, Ryosuke (1700) | Lost 1-2 | -161578 |
| 4sealed | 344 | Yoshizawa, Kaoru (1474) | Won 2-1 | +161594 |
| 5sealed | 310 | Karasawa, Ryuichi (1841) | Lost 1-2 | -141580 |
| 6sealed | 448 | Awane, Hiroyuki (1487) | Won 2-0 | +171597 |
| 7sealed | 401 | Ji, Yuanming (1542) | Lost 0-2 | -191578 |
| 8sealed | 444 | Kashiwa, Tomohiro (1582) | Won 2-0 | +181596 |
| top | average opponent: 1590record: 5-3 | new rating: 1596 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 240 | Mizoguchi, Satoru (1344) | Lost 0-2 | -221521 |
| 3standard | 330 | Okamoto, Keitaro (1537) | Lost 0-2 | -171504 |
| 4standard | 705 | Miyawaki, Takeshi (1615) | Won 2-1 | +201524 |
| 5standard | 779 | Moriya, Erika (1606) | Won 2-0 | +191543 |
| 6standard | 580 | Nozawa, Yuusuke (1482) | Lost 0-2 | -191524 |
| 7standard | 704 | Shinoda, Takayuki (1511) | Won 2-0 | +181542 |
| 8standard | 608 | Murase, Tatsuya (1474) | Won 2-0 | +171559 |
| top | average opponent: 1510record: 4-3 | new rating: 1559 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1570 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 442 | Inoue, Masashi (1538) | Won 2-0 | +171587 |
| 3sealed | 262 | Sakaguchi, Hiroshi (1337) | Lost 1-2 | -221565 |
| 4sealed | 528 | Sano, Satoki (1523) | Won 2-0 | +171582 |
| 5sealed | 444 | Tezuka, Takatomo (1495) | Lost 1-2 | -201562 |
| 6sealed | 430 | Tokutake, Masayuki (1486) | Lost 1-2 | -191543 |
| top | average opponent: 1476record: 2-3 | new rating: 1543 | ||
| Grand Prix Shanghai 2017 (XLN standard) | starting rating: 1554 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 113 | Nagata, Taiga (1417) | Lost 1-2 | -201534 |
| 3standard | 261 | Vojta, David (1522) | Lost 1-2 | -181516 |
| 4standard | 237 | Wu, Hongmin (1502) | Draw 1-1 | -11515 |
| 5standard | 273 | Wu, Yunhao (1493) | Lost 0-2 | -181497 |
| 6standard | 306 | Fang, Zhengyang (1565) | Won 2-0 | +191516 |
| 7standard | 257 | Wen, Zixiao (1452) | Won 2-1 | +171533 |
| 8standard | 208 | Bai, Xuefei (1495) | Won 2-0 | +171550 |
| 9standard | 160 | Li, Kai (1626) | Won 2-1 | +201570 |
| top | average opponent: 1509record: 4-3-1 | new rating: 1570 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 26 | Sasayama, Tatsuya (1500) | Won 2-1 | +171552 |
| 2modern | 471 | Yoshihara, Shouta (1647) | Won 2-0 | +201572 |
| 3modern | 265 | Matsumura, Takehiko (1651) | Won 2-0 | +191591 |
| 4modern | 35 | Yoshii, Takumi (1564) | Lost 1-2 | -181573 |
| 5modern | 395 | Kanbayashi, Hirotaka (1472) | Won 2-1 | +161589 |
| 6modern | 333 | Kasama, Junichi (1474) | Lost 1-2 | -201569 |
| 7modern | 285 | Ishikawa, Kenji (1495) | Lost 1-2 | -191550 |
| 8modern | 611 | Tsutazawa, Hiroshi (1584) | Won 2-0 | +181568 |
| 9modern | 574 | Huck, David (1582) | Won 2-0 | +181586 |
| 10modern | 247 | Yoshizawa, Kaoru (1565) | Won 2-1 | +181604 |
| 11modern | 197 | Akamine, Yuta (1542) | Won 2-1 | +171621 |
| 12modern | 165 | Nomiya, Yohei (1691) | Lost 0-2 | -171604 |
| 13modern | 215 | Kawasaki, Hirotaka (1682) | Lost 0-2 | -161588 |
| 14modern | 236 | Urase, Ryosuke (1835) | Lost 0-2 | -141574 |
| 15modern | 233 | Kawasaki, Takeshi (1485) | Lost 0-2 | -201554 |
| top | average opponent: 1585record: 8-7 | new rating: 1554 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 156 | Izumi, Yuta (1444) | Won 2-0 | +171518 |
| 2standard | 372 | Saito, Eisuke (1518) | Won 2-1 | +181536 |
| 3standard | 367 | Atsuji, Makoto (1452) | Lost 0-2 | -191517 |
| 4standard | 789 | Kato, Hiromu (1520) | Won 2-1 | +181535 |
| 5standard | 533 | Ishii, Masashi (1416) | Lost 1-2 | -211514 |
| 6standard | 626 | Xie, Zhan (1782) | Won 2-1 | +231537 |
| 7standard | 503 | Morita, Kazuki (1448) | Won 2-1 | +171554 |
| 8standard | 171 | Shimizu, Syunya (1539) | Lost 0-2 | -191535 |
| 9standard | 557 | Matsumoto, Keiichiro (1440) | Won 2-0 | +171552 |
| 10standard | 207 | Imazawa, Junpei (1541) | Won 2-1 | +171569 |
| 11standard | 189 | Yamamoto, Masafumi (1635) | Lost 1-2 | -161553 |
| 12standard | 269 | Muramatsu, Yusuke (1563) | Lost 0-2 | -181535 |
| top | average opponent: 1525record: 7-5 | new rating: 1535 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 617 | Tanabe, Kohei (1521) | Won 2-1 | +181540 |
| 2standard | 352 | Katou, Takayoshi (1488) | Lost 1-2 | -191521 |
| 3standard | 819 | Yamada, Sintarou (1506) | Lost 0-2 | -191502 |
| 4standard | 1486 | Saito, Naoki (1429) | Won 2-0 | +171519 |
| 5standard | 1048 | Wen, Wei-Hsun (1540) | Draw 1-1 | +11520 |
| 6standard | 1007 | Kouroku, Hikaru (1496) | Lost 1-2 | -191501 |
| top | average opponent: 1497record: 2-3-1 | new rating: 1501 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1251 | Sasada, Youhei (1474) | Won 2-0 | +181518 |
| 2sealed | 996 | Nomura, Shintaro (1492) | Lost 0-2 | -191499 |
| 3sealed | 1250 | Sekikawa, Tsubasa (1464) | Lost 0-2 | -191480 |
| 4sealed | 1273 | Kumagai, Haruka (1480) | Won 2-1 | +181498 |
| 5sealed | 1145 | Oomura, Tomoya (1730) | Won 2-1 | +231521 |
| 6sealed | 990 | Kumon, Shun (1581) | Won 2-1 | +191540 |
| 7sealed | 900 | Obata, Ryoichi (1541) | Lost 1-2 | -181522 |
| top | average opponent: 1537record: 4-3 | new rating: 1522 | ||