Maruyama, Tatsuya
Current rating: 1482
| Grand Prix Sendai 2004 (DST limited) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 142 | Takeuchi, Ryota (1520) | Won 2-1 | +181550 |
| 2sealed | 95 | Matousek, Pavel (1703) | Lost 1-2 | -151535 |
| 3sealed | 184 | Fuma, Masaharu (1635) | Lost 0-2 | -171518 |
| 4sealed | 196 | Yamaguchi, Ryutaro (1518) | Lost 1-2 | -181500 |
| 5sealed | 208 | Gotou, Ryouiti (1466) | Lost 1-2 | -181482 |
| top | average opponent: 1568record: 1-4 | new rating: 1482 | ||
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1531 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 232 | Mochiduki, Masashi (1574) | Won 2-0 | +191550 |
| 2sealed | 99 | Kinoshita, Atsushi (1518) | Lost 0-2 | -191531 |
| 3sealed | 185 | Nakamura, Kiyonari (1548) | Won 2-1 | +191550 |
| 4sealed | 118 | Yamano, Tatsuto (1416) | Lost 0-2 | -211529 |
| 5sealed | 175 | Sasahara, Yasufumi (1630) | Won 2-1 | +201549 |
| 6sealed | 151 | Mitsuhashi, Takashi (1630) | Won 2-0 | +201569 |
| 7sealed | 69 | Suzuki, Shinya (1567) | Lost 1-2 | -181551 |
| 8sealed | 105 | Mizuno, Hirohiko (1518) | Lost 1-2 | -191532 |
| top | average opponent: 1550record: 4-4 | new rating: 1532 | ||
| Grand Prix Utsunomiya 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 39 | Mayuzumi, Shinichi (1535) | Won 2-1 | +191519 |
| 2sealed | 50 | Aikawa, Takeshi (1500) | Won 2-1 | +171536 |
| 3sealed | 83 | Ishii, Kota (1536) | Won 2-0 | +181554 |
| 4sealed | 42 | Ishida, Atsushi (1530) | Lost 0-2 | -181536 |
| 5sealed | 68 | Komuro, Shuu (1582) | Won 2-0 | +191555 |
| 6sealed | 28 | Tashiro, Hayato (1573) | Won 2-0 | +181573 |
| 7sealed | 36 | Kamei, Shunsuke (1592) | Won 2-0 | +181591 |
| 8sealed | 113 | Ikeda, Tsuyoshi (1818) | Lost 1-2 | -141577 |
| 9rochester | 26 | Kinoshita, Junichi (1711) | Lost 1-2 | -151562 |
| 10rochester | 29 | Yamamoto, Keitaro (1566) | Won 2-1 | +181580 |
| 11rochester | 24 | Murakami, Yuuki (Miyagi) (1687) | Draw 1-1 | +21582 |
| 12rochester | 24 | Murakami, Yuuki (Miyagi) (1685) | Lost 0-2 | -161566 |
| 13rochester | 23 | Serata, Kohei (1559) | Lost 1-2 | -181548 |
| 14rochester | 3 | Matsuzuki, Kyosuke (1640) | Lost 0-2 | -171531 |
| top | average opponent: 1608record: 7-6-1 | new rating: 1531 | ||