Costello, Jamie
Current rating: 1476
Record: 3-4
| Grand Prix Birmingham 2017 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 563 | Ireland, Graham (1524) | Lost 0-2 | -181482 |
| 2modern | 468 | Walsh, Lawrence (1482) | Won 0-0 | +181500 |
| 3modern | 664 | Andrews, Ben (1492) | Lost 0-2 | -181482 |
| 4modern | 740 | Akerblom, Philip (1405) | Won 2-1 | +171499 |
| 5modern | 181 | Stevens, Charlotte (1328) | Lost 1-2 | -211478 |
| 6modern | 549 | Devereux, Andrew (1383) | Won 2-1 | +161494 |
| 7modern | 465 | Salling Hvass, Jonatan (1509) | Lost 0-2 | -181476 |
| average opponent: 1446record: 3-4 | new rating: 1476 | |||