Cortez, Jonathan
Current rating: 1539
Record: 7-5-1
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 736 | McGrath, John 7649 (1500) | Won 2-1 | +181518 |
| 2modern | 497 | Ribak, Sergei (1497) | Won 2-1 | +181536 |
| 3modern | 297 | Bianchi, Alex (1662) | Lost 1-2 | -161520 |
| 4modern | 415 | Esten, Charles (1516) | Won 2-1 | +181538 |
| 5modern | 315 | Norman, Jeremy (1534) | Lost 0-2 | -181520 |
| 6modern | 638 | Wasil, Ryan (1524) | Won 2-1 | +181538 |
| 7modern | 366 | Sturckler, Andrew (1513) | Won 2-0 | +171555 |
| 8modern | 187 | Favretto, Carlo (1628) | Lost 1-2 | -161539 |
| average opponent: 1547record: 5-3 | new rating: 1539 | |||
| Grand Prix Richmond 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 94 | Mrozinski, Chris (1505) | Draw 1-1 | 01500 |
| 2modern | 307 | Benning, Mark (1495) | Won 2-1 | +181518 |
| 3modern | 237 | Long, James (1547) | Lost 1-2 | -171501 |
| 4modern | 375 | Kwan, Adam (1465) | Lost 1-2 | -191482 |
| 5modern | 434 | Nelson, Matthew (1484) | Won 2-0 | +181500 |
| average opponent: 1499record: 2-2-1 | new rating: 1500 | |||