Johnston, Jeff
Current rating: 1399
Record: 1-7
| Grand Prix Phoenix 2017 (XLN limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 74 | Fairbanks, Jay (1500) | Lost 0-2 | -171429 |
| 2sealed | 256 | Shih, Michael (1344) | Lost 0-2 | -191410 |
| 3sealed | 500 | Irwin, Jacob (1469) | Won 2-0 | +191429 |
| 4sealed | 383 | Shocklee, Brian (1485) | Lost 0-2 | -171412 |
| 5sealed | 450 | Klosterman, Stefan (1722) | Lost 0-2 | -131399 |
| average opponent: 1504record: 1-4 | new rating: 1399 | |||
| Grand Prix Los Angeles 2014 (KTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 3 | Rando, Alex (1519) | Lost 0-2 | -181482 |
| 2standard | 685 | Tuttle, Adam (1485) | Lost 0-2 | -181464 |
| 3standard | 824 | Walker, Nicholas (1464) | Lost 0-2 | -181446 |
| average opponent: 1490record: 0-3 | new rating: 1446 | |||