Dumee, Jonathan
Current rating: 1578
Record: 13-10
| Grand Prix Atlanta 2019 (legacy) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 99 | Gibson, James (1500) | Lost 0-2 | -171448 |
| 2legacy | 386 | Casella, Anthony (1486) | Won 2-0 | +191467 |
| 3legacy | 287 | Gotta, Raymond (1500) | Won 2-1 | +181485 |
| 4legacy | 131 | Scheppers, Zachary (1519) | Lost 0-2 | -171468 |
| 5legacy | 369 | Jackson, Marcus (1486) | Won 2-1 | +181486 |
| 6legacy | 188 | Angulo, Juanmanuel (1521) | Won 2-1 | +191505 |
| 7legacy | 180 | Alt, Andrew (1610) | Won 2-0 | +201525 |
| 8legacy | 104 | Chu, Tony (1560) | Won 2-0 | +181543 |
| 9legacy | 89 | Shukla, Neeraj (1763) | Lost 1-2 | -141529 |
| 10legacy | 71 | Fiore, Dillon (1568) | Won 2-0 | +191548 |
| 11legacy | 66 | Galatro, Stephen (1642) | Won 2-0 | +201568 |
| 12legacy | 41 | Collins, Austin (1772) | Lost 0-2 | -141554 |
| 13legacy | 67 | Vook, Matthew (1646) | Lost 0-2 | -171537 |
| 14legacy | 63 | Ward, Daniel (1796) | Won 2-0 | +231560 |
| 15legacy | 64 | Morriss, Bryan (1575) | Won 2-1 | +181578 |
| average opponent: 1596record: 10-5 | new rating: 1578 | |||
| Grand Prix Atlanta 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 307 | Van Zee, Will (1536) | Lost 1-2 | -171483 |
| 2modern | 456 | Dragone, Matthew (1501) | Won 2-0 | +181501 |
| 3modern | 455 | Altman, Amy (1470) | Lost 0-2 | -191482 |
| 4modern | 524 | Gardner, Travis (1482) | Won 2-0 | +181500 |
| 5modern | 393 | Stock, Josh (1451) | Lost 1-2 | -181482 |
| 6modern | 557 | Cloer, Daniel (1482) | Won 2-1 | +181500 |
| 7modern | 365 | Nguyen, Philips (1509) | Lost 0-2 | -181482 |
| 8modern | 377 | Eales, Andrew (1577) | Lost 1-2 | -171465 |
| average opponent: 1501record: 3-5 | new rating: 1465 | |||