Haltiwanger, Jonathan
Current rating: 1487
Record: 16-17
| Grand Prix Orlando 2018 (M19 standard) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 35 | Gray, Darren (1429) | Lost 0-2 | -201487 |
| 2standard | 336 | Sheehan, John (1516) | Won 2-0 | +191506 |
| 3standard | 302 | Freeman, Michael (1466) | Won 2-0 | +171523 |
| 4standard | 305 | Schneider, Stuart (1476) | Lost 1-2 | -191504 |
| 5standard | 266 | Miller, Matthew (1572) | Lost 0-2 | -171487 |
| top | average opponent: 1492record: 2-3 | new rating: 1487 | ||
| Grand Prix Orlando 2017 (AER limited) | starting rating: 1476 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 867 | Rose, Dylan (1482) | Lost 0-2 | -181458 |
| 2sealed | 897 | Anderson, Benjamin (1482) | Won 2-0 | +191477 |
| 3sealed | 942 | Shiffman, Ethan (1500) | Won 2-0 | +181495 |
| 4sealed | 889 | Hession-Kunz, Jacob (1517) | Lost 1-2 | -181477 |
| 5sealed | 889 | Davis, Shawn (1462) | Won 2-1 | +181495 |
| 6sealed | 802 | Torres, Juan (1519) | Won 2-1 | +181513 |
| 7sealed | 729 | Barnard, Ryeland (1631) | Won 2-1 | +211534 |
| 8sealed | 727 | Dobbin, Jack (1913) | Lost 1-2 | -121522 |
| 9sealed | 699 | Wu, Gavin (1653) | Lost 0-2 | -151507 |
| top | average opponent: 1573record: 5-4 | new rating: 1507 | ||
| Grand Prix Miami 2015 (FRF standard) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 274 | Lacomb, Corey (1526) | Lost 0-2 | -181495 |
| 2standard | 512 | Roman, David (1467) | Lost 1-2 | -191476 |
| 3standard | 576 | Jones, Brandon S (1462) | Lost 0-2 | -181458 |
| 4standard | 622 | Nelson, Michael A (1447) | Won 2-1 | +181476 |
| top | average opponent: 1476record: 1-3 | new rating: 1476 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 837 | Watson, Brett (1500) | Lost 1-2 | -181497 |
| 2sealed | 1182 | Rose, Danny (1449) | Lost 0-2 | -191478 |
| 3sealed | 472 | Edge, Joshua (1463) | Won 2-0 | +181496 |
| 4sealed | 421 | Smith, Aaron (1436) | Won 0-0 | +171513 |
| 5sealed | 371 | Piedra, Julian A (1500) | Lost 1-2 | -181495 |
| 6sealed | 304 | Patton, Brandon (1496) | Won 2-0 | +181513 |
| top | average opponent: 1474record: 3-3 | new rating: 1513 | ||
| Grand Prix Albuquerque 2013 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 160 | Motes, Tristin (1500) | Won 2-1 | +181518 |
| 2standard | 138 | Wedding, Reid (1460) | Lost 0-2 | -191499 |
| 3standard | 346 | Liberto, Lance (1389) | Won 2-0 | +161515 |
| 4standard | 320 | Cloyd, Jeremy (1515) | Lost 1-2 | -181497 |
| 5standard | 390 | Gallagher, Catherine (1450) | Won 2-1 | +171514 |
| 6standard | 270 | Wey, Matt (1573) | Lost 1-2 | -171497 |
| 7standard | 312 | Erwin, Adam (1478) | Lost 1-2 | -181479 |
| 8standard | 316 | Jones, Brock (1513) | Won 2-1 | +181497 |
| 9standard | 281 | Covert, Brent (1498) | Won 2-1 | +181515 |
| top | average opponent: 1486record: 5-4 | new rating: 1515 | ||