Roberts, Oscar
Current rating: 1522
Record: 8-8
| Grand Prix Birmingham 2017 (modern) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 157 | Buchanan, Robbie (1504) | Lost 1-2 | -181500 |
| 2modern | 585 | Jackson, Matthew [ENG] (1482) | Won 0-0 | +171517 |
| 3modern | 589 | Seawright, Alexander (1500) | Lost 1-2 | -181499 |
| 4modern | 727 | Frilund, Michael (1596) | Won 2-1 | +201519 |
| 5modern | 558 | Ekstrom, Markus (1463) | Lost 1-2 | -191500 |
| 6modern | 598 | Delanghe, Dimitri (1470) | Won 2-0 | +171517 |
| 7modern | 445 | Barrie, Daniel (1498) | Won 2-0 | +181535 |
| 8modern | 407 | Stok, Alex (1836) | Lost 0-2 | -131522 |
| average opponent: 1544record: 4-4 | new rating: 1522 | |||
| Grand Prix London 2016 (KLD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 550 | Muller, John (1555) | Won 2-0 | +191519 |
| 2sealed | 425 | Arnold, Mickey (1517) | Won 2-1 | +181537 |
| 3sealed | 507 | Bahr, Peter Michael (1665) | Won 2-0 | +201557 |
| 4sealed | 103 | Stranjak, Denis (1552) | Won 2-0 | +181575 |
| 5sealed | 74 | Del Basso, Federico (1968) | Lost 1-2 | -111564 |
| 6sealed | 315 | Mauch, Hannes (1795) | Lost 0-2 | -141550 |
| 7sealed | 343 | Shapcott, Andrew (1605) | Lost 0-2 | -171533 |
| 8sealed | 525 | Negro Cortes, Adrian Elias (1677) | Lost 1-2 | -151518 |
| average opponent: 1667record: 4-4 | new rating: 1518 | |||