Johnson, Roger
Current rating: 1484
Record: 3-4
| Grand Prix Oklahoma City 2019 (ELD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 19 | Jennings, Michael (1435) | Lost 1-2 | -191481 |
| 2standard | 105 | Livingston, Lee (1604) | Lost 1-2 | -161465 |
| 4standard | 149 | Harrison, Michael [USA] (1437) | Lost 0-2 | -181447 |
| 5standard | 137 | Shaffer, Richard (1415) | Lost 0-0 | -191428 |
| 6standard | 132 | Lamantia, Robert (1443) | Won 2-0 | +181446 |
| 7standard | 111 | Yarbrough, Thomas (1646) | Won 2-0 | +221468 |
| 8standard | 91 | Bretthorst, Robert (1348) | Won 2-0 | +161484 |
| average opponent: 1476record: 3-4 | new rating: 1484 | |||