Hamaguchi, Katsuhiro
Current rating: 1510
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 114 | Akagawa, Retta (1500) | Won 2-0 | +171549 |
| 2sealed | 329 | Maruyama, Yuichiro (1653) | Lost 0-2 | -161533 |
| 3sealed | 857 | Takenaka, Susumu (1385) | Lost 0-2 | -211512 |
| 4sealed | 1110 | Hirano, Yasuhisa (1512) | Won 2-1 | +181530 |
| 5sealed | 594 | Nakanishi, Yutaka (1526) | Won 2-0 | +181548 |
| 6sealed | 676 | Arahori, Kazuaki (1576) | Lost 0-2 | -171531 |
| 7sealed | 763 | Hagiwara, Satoshi (1479) | Won 2-0 | +171548 |
| 8sealed | 524 | Hanada, Keisuke (1485) | Lost 0-2 | -191529 |
| 9sealed | 569 | Sakamoto, Akatoki (1503) | Lost 1-2 | -191510 |
| top | average opponent: 1513record: 4-5 | new rating: 1510 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2040 | Konta, Jun (1500) | Won 2-1 | +181515 |
| 2sealed | 2014 | Arai, Yuusuke0780 (1466) | Lost 0-2 | -191496 |
| 3sealed | 2271 | Sakuma, Toshimitsu (1634) | Won 2-1 | +211517 |
| 4sealed | 2231 | Mizumura, Ukon (1523) | Lost 0-2 | -181499 |
| 5sealed | 2306 | Ishino, Hiroki (1499) | Lost 0-2 | -181481 |
| 6sealed | 2300 | Otsuka, Atsushi (1481) | Won 2-0 | +181499 |
| 7sealed | 2232 | Yamashita, Kohji (1209) | Won 2-1 | +131512 |
| 8sealed | 2164 | Tabata, Yuusuke (1629) | Won 2-0 | +201532 |
| top | average opponent: 1493record: 5-3 | new rating: 1532 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 4 | Kurikage, Kazuya (1402) | Won 2-0 | +161516 |
| 2sealed | 160 | Nozaki, Yousuke (1518) | Lost 1-2 | -181498 |
| 3sealed | 412 | Ozaki, Naoto (1465) | Lost 0-2 | -181480 |
| 4sealed | 397 | Shinzato, Kazuaki (1508) | Lost 0-2 | -181462 |
| 5sealed | 436 | Goshima, Akito (1468) | Lost 1-2 | -181444 |
| 6sealed | 368 | Tsushima, Shinichirou (1456) | Draw 1-1 | 01444 |
| 7sealed | 299 | Hipperson, Aaron (1393) | Won 2-1 | +181462 |
| 8sealed | 242 | Tachibana, Emu (1463) | Won 2-1 | +181480 |
| 9sealed | 181 | Kawa, Hirokazu (1454) | Won 2-0 | +171497 |
| top | average opponent: 1458record: 4-4-1 | new rating: 1497 | ||