O'Briant, John
Current rating: 1479
Record: 2-3
| Grand Prix Hartford 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 207 | Landaira, Noah (1311) | Lost 1-2 | -211479 |
| 2modern | 449 | Klepser, Henry (1482) | Won 2-1 | +181497 |
| 3modern | 547 | Cooper, Tim (1303) | Won 2-1 | +141511 |
| 4modern | 346 | Wells, Benjamin (1467) | Lost 1-2 | -191492 |
| 5modern | 499 | Carle, Ian (1776) | Lost 1-2 | -131479 |
| average opponent: 1468record: 2-3 | new rating: 1479 | |||