Katou, Yoshitaka
Current rating: 1426
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1476 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1004 | Kobayashi, Takahito (1706) | Lost 0-2 | -141462 |
| 2sealed | 998 | Mizoguchi, Izumi (1482) | Lost 0-2 | -171445 |
| 3sealed | 1124 | Nitsu, Shunsuke (1464) | Lost 1-2 | -181427 |
| 4sealed | 1126 | Kuramochi, Takashi (1274) | Won 2-0 | +151442 |
| 5sealed | 1042 | Nakamura, Akihiro (1466) | Won 2-0 | +191461 |
| 6sealed | 994 | Esashika, Akio (1480) | Lost 0-2 | -181443 |
| 7sealed | 941 | Kokawa, Tsunao (1466) | Lost 0-2 | -171426 |
| top | average opponent: 1477record: 2-5 | new rating: 1426 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 72 | Okumura, Katsuhiko (1510) | Lost 1-2 | -181498 |
| 2standard | 424 | Takahashi, Katsumi (1482) | Won 2-0 | +181516 |
| 3standard | 498 | Oohira, Tsugunobu (1500) | Lost 0-2 | -191497 |
| 4standard | 654 | Satou, Yoshikazu (1345) | Draw 1-1 | -21495 |
| 5standard | 639 | Fukuda, Masahiro (1482) | Lost 0-2 | -191476 |
| top | average opponent: 1464record: 1-3-1 | new rating: 1476 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 143 | Naito, Kakeru (1500) | Won 2-1 | +181518 |
| 2modern | 282 | Sekine, Kiyotaka (1446) | Lost 1-2 | -191499 |
| 3modern | 473 | Iwao, Takashi (1487) | Lost 0-2 | -191480 |
| 4modern | 617 | Osanai, Takashi (1452) | Lost 1-2 | -181462 |
| 5modern | 636 | Kurihara, Naoya (1460) | Lost 0-2 | -181444 |
| 6modern | 564 | Matsui, Yuuichirou (1448) | Won 2-0 | +181462 |
| 7modern | 457 | Yamato M., (1467) | Won 2-0 | +181480 |
| 8modern | 363 | Koike, manabu (1481) | Won 2-0 | +181498 |
| 9modern | 237 | Ootani, Yuusuke (1493) | Won 2-0 | +181516 |
| top | average opponent: 1470record: 5-4 | new rating: 1516 | ||