Roberts, Doc
Current rating: 1397
Record: 0-6
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 302 | May, Trevor (1585) | Lost 0-2 | -151429 |
| 2modern | 287 | Peace, Matthew (1584) | Lost 0-2 | -151414 |
| 3modern | 399 | Flores, Caleb (1465) | Lost 0-2 | -171397 |
| average opponent: 1545record: 0-3 | new rating: 1397 | |||
| Grand Prix Atlanta 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 224 | Bryant, Travis (1454) | Lost 1-2 | -191481 |
| 2modern | 410 | Minagawa, Kenji (1485) | Lost 1-2 | -181463 |
| 3modern | 627 | Baldwin, Chase (1413) | Lost 1-2 | -191444 |
| average opponent: 1451record: 0-3 | new rating: 1444 | |||