Katayama, Tomoyuki
Current rating: 1528
Record: 14-12
| Grand Prix Hiroshima 2006 (CSP limited) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1 | Akagi, Hiroyuki (1485) | Won 2-1 | +171549 |
| 2sealed | 61 | Ueyama, Yuji (1517) | Lost 0-2 | -191530 |
| 3sealed | 138 | Ito, Akira (1463) | Won 2-1 | +171547 |
| 4sealed | 91 | Miyaoka, Hiroyuki (1483) | Lost 0-2 | -191528 |
| top | average opponent: 1487record: 2-2 | new rating: 1528 | ||
| Grand Prix Fukuoka 2002 (TOR limited) | starting rating: 1552 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 35 | Kai, Tsubasa (1499) | Lost 0-2 | -191533 |
| 2sealed | 169 | Suzuya, Masashi (1482) | Won 2-0 | +181551 |
| 3sealed | 116 | Takeshita, Akira (1498) | Lost 0-2 | -191532 |
| top | average opponent: 1493record: 1-2 | new rating: 1532 | ||
| Grand Prix Shizuoka 2001 (ODY limited) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 44 | Kawana, Masato (1500) | Won 2-0 | +181534 |
| 2sealed | 100 | Ueno, Shinichi (1538) | Won 2-0 | +181552 |
| 3sealed | 90 | Shikata, Nobusuke (1500) | Lost 1-2 | -191533 |
| 4sealed | 168 | Kuroda, Toshiyuki (1610) | Won 2-0 | +201553 |
| 5sealed | 48 | Sugimoto, Takayuki (1536) | Won 2-1 | +171570 |
| 6sealed | 71 | Toochika, Takayuki (1525) | Won 2-0 | +181588 |
| 7sealed | 31 | Sekine, Takeshi (1654) | Lost 1-2 | -171571 |
| 8sealed | 70 | Komiyama, Hideki (1554) | Lost 0-2 | -191552 |
| top | average opponent: 1552record: 5-3 | new rating: 1552 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 212 | Yamada, Masamichi (1500) | Lost 0-2 | -181480 |
| 2block | 579 | Ishizuka, Hiroichi (1481) | Won 2-0 | +181498 |
| 3block | 310 | Tanaka, Toshihiro (1500) | Won 2-1 | +181516 |
| 4block | 378 | Kakigi, Makoto (1517) | Won 2-1 | +181534 |
| 5block | 110 | Komiya, Mitsuhiro (1536) | Lost 0-2 | -181516 |
| top | average opponent: 1507record: 3-2 | new rating: 1516 | ||
| Grand Prix Hiroshima 2001 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 158 | Kotsuma, Taiichi (1500) | Lost 0-2 | -181482 |
| 2sealed | 197 | Kaneko, Takanori (1482) | Won 2-0 | +181500 |
| 3sealed | 153 | Sakurai, Yuu (1448) | Won 2-0 | +171517 |
| 4sealed | 66 | Neki, Haruyuki (1524) | Lost 0-2 | -181499 |
| 5sealed | 118 | Suga, Takeichi (1450) | Won 2-1 | +171516 |
| 6sealed | 68 | Iwade, Takashi (1518) | Lost 0-2 | -181498 |
| top | average opponent: 1487record: 3-3 | new rating: 1498 | ||