Martinson, Matthew
Current rating: 1414
Record: 1-6-2
| Grand Prix Oklahoma City 2017 (modern) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 425 | Keating, Michael (1652) | Lost 1-2 | -141449 |
| 2modern | 535 | Kageler, Aydin (1547) | Lost 0-2 | -171432 |
| 3modern | 630 | Green, Thomas (1360) | Lost 1-2 | -191413 |
| 4modern | 672 | Holle, Michael (1445) | Won 2-1 | +191432 |
| 5modern | 632 | Vallas, Nick (1470) | Lost 0-2 | -181414 |
| average opponent: 1495record: 1-4 | new rating: 1414 | |||
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 333 | Sandall, Kelly (1464) | Lost 1-2 | -191481 |
| 2modern | 813 | Hagedorn, Jisela (1501) | Draw 1-1 | +11482 |
| 3modern | 1298 | Torres, Luis (1483) | Lost 0-2 | -181464 |
| 4modern | 1388 | Humpherys, Nathan (1433) | Draw 1-1 | -11463 |
| average opponent: 1470record: 0-2-2 | new rating: 1463 | |||