Katoh, Wataru
Current rating: 1236
Record: 17-38-2
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1262 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 351 | Ichi, Kenji (1470) | Lost 0-2 | -141248 |
| 3standard | 488 | Oda, Ryutaro (1544) | Lost 0-2 | -131235 |
| 4standard | 716 | Kato, Atushi (1512) | Lost 0-2 | -131222 |
| 5standard | 757 | Itakura, Kenichi (1310) | Lost 0-2 | -161206 |
| 6standard | 693 | Tanaka, Junichi 677 (1446) | Won 2-0 | +221228 |
| 7standard | 590 | Tsukayama, Tomoya (1464) | Lost 0-2 | -141214 |
| 8standard | 506 | Yoshioka, Shigehito (1452) | Won 2-0 | +221236 |
| top | average opponent: 1457record: 2-5 | new rating: 1236 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1323 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 465 | Okada, Keita (1320) | Lost 1-2 | -181305 |
| 3sealed | 959 | Dowling, Thomas (1580) | Lost 0-2 | -131292 |
| 4sealed | 970 | Tang, Jiasheng (1483) | Lost 0-2 | -141278 |
| 5sealed | 897 | Lee Xin Yi, Pricilla (1410) | Lost 0-2 | -161262 |
| top | average opponent: 1448record: 0-4 | new rating: 1262 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1305 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 646 | Kamijo, Shiori (1500) | Lost 1-2 | -151290 |
| 2modern | 749 | Lee, Soojong (1482) | Lost 0-2 | -141276 |
| 3modern | 1204 | Suzuki, Kana (1464) | Won 2-1 | +211297 |
| 4modern | 921 | Yamamoto, Takumi (1443) | Lost 1-2 | -151282 |
| 5modern | 1018 | Toyohara, Eisuke (1249) | Won 2-0 | +171299 |
| 6modern | 777 | Hanada, Keisuke (1435) | Won 2-0 | +211320 |
| 7modern | 678 | Kogure, Naoto (1496) | Lost 1-2 | -151305 |
| 8modern | 600 | Narumi, Masaru (1325) | Won 2-0 | +181323 |
| top | average opponent: 1424record: 4-4 | new rating: 1323 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1324 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 666 | Takamatsu, Masahiro (1376) | Won 2-0 | +191343 |
| 2standard | 231 | Kawata, Kazuki (1525) | Lost 0-2 | -151328 |
| 3standard | 698 | Takagi, Kenji (1408) | Lost 0-2 | -161312 |
| 4standard | 870 | Tomiyama, Shin (1382) | Won 2-0 | +191331 |
| 5standard | 806 | Udagawa, Masaru (1468) | Lost 1-2 | -151316 |
| 6standard | 822 | Asao, Kazuki (1460) | Won 2-1 | +201336 |
| 7standard | 680 | Ito, Kazuhiro (1452) | Lost 0-2 | -161320 |
| 8standard | 681 | Yamamoto, Shintaro (1463) | Lost 0-2 | -151305 |
| top | average opponent: 1442record: 3-5 | new rating: 1305 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1363 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 288 | Ogiwara, Ryoichi (1500) | Won 2-0 | +211384 |
| 2legacy | 243 | Shimizu, Hiroaki (1443) | Lost 1-2 | -171367 |
| 3legacy | 531 | Kumagae, Kousuke (1457) | Lost 0-2 | -171350 |
| 4legacy | 584 | Hayashi, Nobuhiko (1461) | Won 2-0 | +201370 |
| 5legacy | 324 | Kim, Jinho (1525) | Lost 1-2 | -151355 |
| 6legacy | 498 | Uno, Yuki (1503) | Lost 1-2 | -151340 |
| 7legacy | 469 | Zhu, Junfei (1466) | Lost 0-2 | -161324 |
| top | average opponent: 1479record: 2-5 | new rating: 1324 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1388 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 160 | Kuwashiro, Yoshiyuki (1430) | Lost 0-2 | -171371 |
| 2sealed | 938 | Haraguchi, Fernando (1485) | Lost 1-2 | -161355 |
| 3sealed | 1182 | Ozawa, Akihito (1462) | Lost 1-2 | -161339 |
| 4sealed | 1136 | Yamamoto, Shohei 2804 (1448) | Won 2-0 | +201359 |
| 5sealed | 945 | Igarasi, Yousuke (1471) | Won 2-0 | +201379 |
| 6sealed | 765 | Yoshida, Kazutaka (1494) | Lost 0-2 | -161363 |
| top | average opponent: 1465record: 2-4 | new rating: 1363 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1414 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 595 | Choi, Suouk (1498) | Lost 0-2 | -171397 |
| 2modern | 702 | Hashimoto, Arata (1494) | Lost 0-2 | -161381 |
| 3modern | 1329 | Watanabe, Kazuki (1468) | Lost 0-2 | -161365 |
| 4modern | 1281 | Matsumata, Syusaku (1353) | Won 2-1 | +171382 |
| 5modern | 1175 | Satou, Masanori (1584) | Won 2-1 | +221404 |
| 6modern | 1056 | Takato, Toshiyuki (1533) | Lost 1-2 | -161388 |
| top | average opponent: 1488record: 2-4 | new rating: 1388 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1433 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 696 | Yamamoto, Kohei (1376) | Lost 0-2 | -191414 |
| top | record: 0-1 | new rating: 1414 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 243 | Garano, Bryan (1500) | Lost 0-2 | -181451 |
| 2standard | 1161 | Oikawa, Kouhei (1485) | Draw 1-1 | +11452 |
| 3standard | 1399 | Nakamoto, Naoki (1424) | Won 2-0 | +171469 |
| 4standard | 1056 | Yoshida, Kenji (1487) | Lost 1-2 | -171452 |
| 5standard | 1305 | Takano, Hirokazu (1408) | Lost 0-2 | -191433 |
| top | average opponent: 1461record: 1-3-1 | new rating: 1433 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 121 | Mori, Mizuki (1500) | Won 2-0 | +181518 |
| 2sealed | 331 | Takahashi, Kei (1585) | Lost 0-2 | -171501 |
| 3sealed | 767 | Kimonji, Hiroki (1702) | Lost 0-2 | -141487 |
| 4sealed | 1148 | Toyota, Youichi (1481) | Draw 1-1 | 01487 |
| 5sealed | 991 | Harada, Yugo (1478) | Lost 1-2 | -181469 |
| top | average opponent: 1549record: 1-3-1 | new rating: 1469 | ||