Tubal, Valter
Current rating: 1466
Record: 6-8
| Grand Prix Barcelona 2018 (modern) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 106 | Latorre, Xavier (1500) | Won 2-1 | +181519 |
| 2modern | 250 | Hernandez Acevedo, Alberto (1525) | Lost 1-2 | -181501 |
| 3modern | 390 | Gerholdt, Steven (1498) | Lost 1-2 | -181483 |
| 4modern | 631 | Lanzo-Rodrguez, Florian (1481) | Lost 0-2 | -181465 |
| 5modern | 681 | D'Elloy, Sylvain (1466) | Won 2-0 | +181483 |
| 6modern | 570 | Bel, Lennaert (1453) | Won 2-0 | +181501 |
| 7modern | 414 | Fabbri, Maicol (1499) | Lost 0-2 | -181483 |
| 8modern | 411 | Vicente Diaz, Daniel (1578) | Lost 0-2 | -171466 |
| average opponent: 1500record: 3-5 | new rating: 1466 | |||
| Grand Prix Lisbon 2012 (RTR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 535 | Andrino, Jesus (1518) | Won 2-0 | +181518 |
| 2sealed | 518 | Battiscombe, Peter (1466) | Lost 0-2 | -191499 |
| 3sealed | 653 | Bohm, Philip (1632) | Won 2-1 | +211520 |
| 4sealed | 630 | Bonifacio da Costa, Vasco (1508) | Lost 0-2 | -181502 |
| 5sealed | 739 | Sezinando, Marco (1500) | Won 2-1 | +181520 |
| 6sealed | 632 | Malasidou, Katerina (1500) | Lost 1-2 | -191501 |
| average opponent: 1521record: 3-3 | new rating: 1501 | |||