Ha, Jonathan
Current rating: 1489
Record: 6-7
| Grand Prix Columbus 2016 (legacy) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 98 | Walker, Michael (1538) | Lost 0-2 | -171505 |
| 4legacy | 266 | Fritzius, Alex (1517) | Won 2-0 | +181523 |
| 5legacy | 248 | Maini, Quentin (1631) | Lost 0-2 | -161507 |
| 6legacy | 295 | Feeley, Sam (1519) | Lost 0-2 | -181489 |
| 7legacy | 576 | Ramsay, Cameron (1501) | Won 2-0 | +181507 |
| 8legacy | 484 | Horn, Michael (1519) | Lost 1-2 | -181489 |
| average opponent: 1537record: 2-4 | new rating: 1489 | |||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1427 | Van Wyk, Cornelius (1464) | Won 2-1 | +171517 |
| 2modern | 1395 | Mullinax, Matthew (1522) | Won 2-0 | +181535 |
| 3modern | 1279 | Dickman, Philip (1582) | Won 2-1 | +191554 |
| 4modern | 1289 | Wildes, Julian (1735) | Lost 1-2 | -141540 |
| 5modern | 1141 | Burdette, Kendall (1485) | Won 2-0 | +171557 |
| 6modern | 1128 | Brooks, Matthew L (1553) | Lost 0-2 | -191538 |
| 7modern | 1040 | Sorrells, Aaron (1633) | Lost 0-2 | -161522 |
| average opponent: 1568record: 4-3 | new rating: 1522 | |||