Watanabe, Ken-Taro
Current rating: 1435
Record: 13-18-1
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1392 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 544 | Ito, Ryo (1372) | Draw 1-1 | -11391 |
| 2standard | 601 | Hasizume, Shoutarou (1448) | Lost 1-2 | -171374 |
| 3standard | 1142 | Fujita, Daisuke (1480) | Won 2-1 | +201394 |
| 4standard | 905 | Shuta, Yamanouchi (1498) | Won 2-1 | +201414 |
| 5standard | 630 | Maeda, Takashi (1276) | Won 2-1 | +161430 |
| 6standard | 408 | Ueno, Satoshi (1475) | Won 2-0 | +181448 |
| 7standard | 250 | Akutagawa, Hiroyuki (1504) | Lost 1-2 | -171431 |
| 8standard | 430 | Nisio, Tomoyasu (1556) | Won 2-0 | +211452 |
| 9standard | 285 | Wakizaka, Hironari (1518) | Lost 0-2 | -171435 |
| top | average opponent: 1459record: 5-3-1 | new rating: 1435 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 199 | Ara, Genta (1500) | Lost 0-2 | -171422 |
| 2standard | 1258 | Minezaki, Akira (1506) | Lost 0-2 | -161406 |
| 3standard | 1489 | Ito, Daiki (Ohmori) (1465) | Won 2-0 | +191425 |
| 4standard | 1196 | Liu, Kevin (1532) | Lost 0-2 | -161409 |
| 5standard | 1429 | Fukaya, Toshiki (1448) | Lost 1-2 | -171392 |
| top | average opponent: 1490record: 1-4 | new rating: 1392 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1409 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 132 | Tokunaga, Hiroki (1455) | Lost 0-1 | -171392 |
| 2standard | 507 | Takahashi, Hidekazu (1480) | Lost 0-2 | -171375 |
| 3standard | 742 | Nakajima, Hiroki (1355) | Won 2-0 | +181393 |
| 4standard | 702 | Fukaya, Akihiro (1353) | Won 2-1 | +171410 |
| 5standard | 469 | Kawate, Junpei (1628) | Won 2-1 | +221432 |
| 6standard | 291 | Kainuma, Satoru (1556) | Won 2-0 | +201452 |
| 7standard | 212 | Murata, Shouta (1535) | Lost 1-2 | -161436 |
| 8standard | 305 | Izawa, Kento (1526) | Lost 0-2 | -161420 |
| 9standard | 318 | Aida, Yasuki (1512) | Won 2-0 | +191439 |
| top | average opponent: 1489record: 5-4 | new rating: 1439 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 371 | Seshimo, Kazuyoshi (1500) | Lost 1-2 | -181482 |
| 2modern | 576 | Sasaki, Masaya (Aichi) (1468) | Won 2-0 | +181500 |
| 3modern | 515 | Shioda, Masaki (1498) | Lost 0-2 | -181482 |
| 4modern | 530 | Tsutamoto, Hokuto (1482) | Lost 1-2 | -181464 |
| 5modern | 620 | Tanaka, Ryu (1423) | Won 2-0 | +171481 |
| 6modern | 520 | Hatashita, Hiroaki (1481) | Lost 1-2 | -181463 |
| 7modern | 456 | Kashiwagi, Junichi (1463) | Lost 1-2 | -181445 |
| 8modern | 373 | Yasui, Yusuke (1444) | Lost 0-2 | -181427 |
| 9modern | 307 | Matsuda, Natsuki (1427) | Lost 0-2 | -181409 |
| top | average opponent: 1465record: 2-7 | new rating: 1409 | ||