Yamaguchi, Ryutaro
Current rating: 1540
Record: 6-4-1
| Grand Prix Sendai 2004 (DST limited) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 150 | Yamamoto, Ryuuji (1500) | Won 2-0 | +171554 |
| 2sealed | 80 | Suzuki, Kenta (1666) | Lost 0-2 | -161538 |
| 3sealed | 159 | Ohnishi, Jyunpei (1405) | Lost 0-2 | -201518 |
| 4sealed | 196 | Maruyama, Tatsuya (1518) | Won 2-1 | +181536 |
| 5sealed | 128 | Takano, Yasuhiro (1570) | Won 2-0 | +181554 |
| 6sealed | 74 | Otsubo, Yuji (1730) | Lost 1-2 | -141540 |
| average opponent: 1565record: 3-3 | new rating: 1540 | |||
| Grand Prix Sydney 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 35 | Smith, Hayden (1518) | Won 2-1 | +181518 |
| 3extended | 26 | Kwan, Chris (1553) | Won 1-0 | +191537 |
| 4extended | 11 | Darragh, Michael (1537) | Draw 1-1 | 01537 |
| 5extended | 17 | Smith, Nik (1534) | Lost 1-2 | -181519 |
| 6extended | 38 | Mircev, Christo (1518) | Won 2-1 | +181537 |
| 7extended | 24 | Barlow, Russell (1503) | ID | 01537 |
| average opponent: 1527record: 3-1-2 | new rating: 1537 | |||