Johnston, Alex
Current rating: 1464
Record: 2-4-1
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 109 | Cavage, Andy (1468) | Draw 1-1 | 01500 |
| 2modern | 109 | Moroni, Zachary (1500) | Lost 1-2 | -181482 |
| 3modern | 109 | Carpenter, Justin (1482) | Lost 1-2 | -181464 |
| average opponent: 1483record: 0-2-1 | new rating: 1464 | |||
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 91 | Stumpf, Samantha J (1500) | Won 2-1 | +181518 |
| 2standard | 260 | Allen, Chris (1478) | Won 2-1 | +171535 |
| 3standard | 23 | Katz, Ben (1534) | Lost 1-2 | -181517 |
| 4standard | 437 | Large, Brandon (1579) | Lost 0-2 | -171500 |
| average opponent: 1523record: 2-2 | new rating: 1500 | |||