Jackson, Jonathan
Current rating: 1421
Record: 10-16
| Grand Prix Oklahoma City 2015 (modern) | starting rating: 1417 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 433 | Schulte, Michael (1356) | Won 2-1 | +171434 |
| 2modern | 174 | Rodriguez, Jacob (1517) | Lost 1-2 | -161418 |
| 3modern | 287 | Smith, David (1411) | Won 0-0 | +171435 |
| 4modern | 273 | Bernard, Warren (1553) | Won 2-1 | +211456 |
| 5modern | 141 | Wycoff, Daithin (1538) | Lost 1-2 | -171439 |
| 6modern | 187 | Joglar, Gabriel (1439) | Lost 1-2 | -181421 |
| top | average opponent: 1469record: 3-3 | new rating: 1421 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1388 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 937 | Tsay, Tony (1595) | Lost 0-2 | -141374 |
| 2sealed | 1170 | Miller, Bobby 380 (1482) | Won 2-1 | +201394 |
| 3sealed | 347 | Dassow, Bradley (1501) | Won 2-1 | +201414 |
| 4sealed | 270 | Tudor, George (1559) | Won 0-0 | +201434 |
| 5sealed | 117 | Vera, Jonathan (1487) | Lost 1-2 | -171417 |
| top | average opponent: 1525record: 3-2 | new rating: 1417 | ||
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1419 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 107 | Santone, Gregory (1522) | Lost 1-2 | -161403 |
| 2modern | 367 | Jones, Maxwell (1508) | Won 2-0 | +201423 |
| 3modern | 317 | Breitman, Alan (1459) | Lost 1-2 | -181405 |
| 4modern | 439 | Souto, Mike (1432) | Lost 0-2 | -171388 |
| top | average opponent: 1480record: 1-3 | new rating: 1388 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1409 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1468 | Gambill, Derek (1500) | Lost 0-2 | -161393 |
| 2modern | 1397 | Weiss, Matt (1481) | Lost 0-2 | -171376 |
| 3modern | 1566 | Albright, John (1468) | Won 2-0 | +201396 |
| 4modern | 1598 | Pecora, Gerald (1509) | Won 2-0 | +201416 |
| 5modern | 1351 | Frank, Andrew (1500) | Won 2-1 | +201436 |
| 6modern | 1211 | Ahmeti, Enver (1513) | Lost 1-2 | -171419 |
| top | average opponent: 1495record: 3-3 | new rating: 1419 | ||
| Grand Prix Miami 2013 (DGM standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 315 | Foens, John E (1500) | Lost 0-2 | -181482 |
| 2standard | 353 | Powell, Adam (1431) | Lost 1-2 | -191463 |
| 3standard | 520 | Copley, Bret (1464) | Lost 1-2 | -181445 |
| 4standard | 571 | Valdes, Carlos (1445) | Lost 1-2 | -181427 |
| 5standard | 525 | Toston, Jairo (1431) | Lost 0-2 | -181409 |
| top | average opponent: 1454record: 0-5 | new rating: 1409 | ||