Rostick, John
Current rating: 1542
Record: 5-3
| Grand Prix Washington DC 2019 (MH1 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 222 | Tiday, Gabriel (1525) | Won 2-1 | +181518 |
| 2sealed | 107 | Peter, Chad (1500) | Won 0-0 | +181536 |
| 3sealed | 255 | Rinehart-Jones, Charlie (1784) | Won 2-1 | +231559 |
| 4sealed | 88 | Reed, Wesley (1577) | Lost 0-2 | -181541 |
| 5sealed | 119 | Posey, Vincent (1538) | Won 2-0 | +181559 |
| 6sealed | 141 | Blanco Ramos, Javier (1600) | Lost 0-2 | -171542 |
| 7sealed | 223 | Waugh, Marcus (1535) | Lost 1-2 | -191523 |
| 8sealed | 183 | Lunsford, Zaknafein (1533) | Won 2-1 | +191542 |
| average opponent: 1574record: 5-3 | new rating: 1542 | |||