O'Brien, Jonathan
Current rating: 1437
| Grand Prix Charlotte 2016 (modern) | starting rating: 1436 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 775 | Bingham, William (1545) | Lost 0-2 | -161420 |
| 2modern | 664 | Ortega, Thomas A (1428) | Won 2-0 | +181438 |
| 3modern | 691 | Briscuso, Julian (1482) | Won 2-1 | +181456 |
| 4modern | 882 | Novins, Michael (1389) | Lost 1-2 | -191437 |
| top | average opponent: 1461record: 2-2 | new rating: 1437 | ||
| Grand Prix Detroit 2016 (modern) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 207 | Whitsitt, Ryan (1774) | Lost 1-2 | -131471 |
| 2modern | 660 | Mezinko, John (1483) | Lost 1-2 | -181453 |
| 3modern | 1187 | Miller, Brandon (1432) | Lost 0-2 | -181435 |
| 4modern | 1193 | Weaver, Justin (1448) | Won 2-0 | +181453 |
| 5modern | 1008 | Payne, Sebastian (1480) | Lost 0-2 | -171436 |
| top | average opponent: 1523record: 1-4 | new rating: 1436 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 89 | Cullum, Mark (1599) | Lost 0-2 | -161484 |
| top | record: 0-1 | new rating: 1484 | ||