Johnston, Ady
Current rating: 1437
Record: 3-7
| Grand Prix Atlanta 2012 (legacy) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 97 | Bloodworth, Benjamin (1500) | Won 2-0 | +191450 |
| 2legacy | 120 | Wall, Chris (1471) | Won 2-0 | +191469 |
| 3legacy | 112 | Guthrie, Kendal (1500) | Lost 1-2 | -181451 |
| 4legacy | 181 | Ruxton, Brad F (1542) | Lost 1-2 | -161435 |
| 5legacy | 278 | Puccio, Michael T (1499) | Won 2-0 | +191454 |
| 6legacy | 261 | Roper, Derrick (1510) | Lost 0-2 | -171437 |
| average opponent: 1504record: 3-3 | new rating: 1437 | |||
| Grand Prix Lincoln 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 48 | Gullett, Gareth E (1500) | Lost 0-2 | -181482 |
| 3modern | 236 | Weeden, Eric (1619) | Lost 1-2 | -161466 |
| 4modern | 283 | Sroges, Walker A (1472) | Lost 1-2 | -171449 |
| 5modern | 292 | Miller, Kyle M (1464) | Lost 1-2 | -181431 |
| average opponent: 1514record: 0-4 | new rating: 1431 | |||