Tamatsukuri, Hiroyuki
Current rating: 1465
Record: 1-3
| Grand Prix Mexico City 2018 (GRN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1 | Arce King, Guillermo (1532) | Lost 1-2 | -171483 |
| 2sealed | 105 | Tarazona, Diego (1558) | Lost 0-2 | -171466 |
| 3sealed | 195 | Sanchez, Raul (1408) | Won 2-0 | +171483 |
| 4sealed | 154 | Garcia Hernandez, Joel Alejandro (1465) | Lost 0-2 | -181465 |
| average opponent: 1491record: 1-3 | new rating: 1465 | |||