Yokoyama, Shoichi
Current rating: 1570
Record: 9-5
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1556 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2109 | Nishikawa, Suguru (1539) | Won 2-0 | +181574 |
| 2sealed | 2055 | Haruta, Takatsugu (1350) | Lost 1-2 | -221552 |
| 3sealed | 2371 | Ichikawa, Kazuyuki (1496) | Won 2-1 | +171569 |
| 4sealed | 2129 | Matsuo, Yoshiyuki (1634) | Lost 0-2 | -171552 |
| 5sealed | 2318 | Fukagawa, Souichiro (1532) | Won 2-0 | +181570 |
| 6sealed | 2195 | Goto, Kosuke (1628) | Won 2-0 | +191589 |
| 7sealed | 2190 | Nakano, Atsushi (1542) | Lost 1-2 | -191570 |
| average opponent: 1531record: 4-3 | new rating: 1570 | |||
| Grand Prix Hiroshima 2001 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 75 | Kobayashi, Akihito (1500) | Won 2-0 | +181518 |
| 2sealed | 69 | Takamori, Hiroaki (1518) | Won 2-0 | +181536 |
| 3sealed | 37 | Shimada, Masatake (1642) | Won 2-0 | +201556 |
| 4sealed | 6 | Kusaba, Nobutaka (1606) | Lost 1-2 | -171539 |
| 5sealed | 59 | Rikuno, Keito (1502) | Lost 1-2 | -191520 |
| 6sealed | 103 | Ito, Yoshihiro (1518) | Won 2-1 | +181538 |
| 7sealed | 66 | Umeno, Kengo (1539) | Won 2-1 | +181556 |
| average opponent: 1547record: 5-2 | new rating: 1556 | |||