Jackson, John
Current rating: 1580
Record: 28-23 (GP) / 1-6 (professional)
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 714 | Sewall, Zachary (1569) | Won 2-1 | +191538 |
| 2modern | 867 | Ellis-Adams, William (1481) | Lost 0-2 | -191519 |
| 3modern | 994 | Lehman, Noah (1566) | Won 2-1 | +181537 |
| 4modern | 989 | Danielson, Paul (1535) | Won 2-1 | +181555 |
| 5modern | 779 | Cloutier, Chuck (1536) | Won 2-1 | +181573 |
| 6modern | 818 | Simpson-Wolf, Anders (1539) | Won 2-0 | +171590 |
| 7modern | 768 | Feingersh, Rachel (1610) | Lost 0-2 | -171573 |
| 8modern | 853 | Quinn, Stephen (1591) | Won 2-1 | +181591 |
| 9modern | 776 | Teplitski, Daniel (1592) | Won 2-0 | +181609 |
| 10modern | 87 | Bianchi, Alex (1481) | Won 2-0 | +161625 |
| 11modern | 73 | Yeaton, Matthew (1615) | Won 2-0 | +181643 |
| 12modern | 46 | Putney, Braden (1634) | Lost 0-2 | -191624 |
| 13modern | 39 | Wilson, Orion (1747) | Lost 1-2 | -151609 |
| 14modern | 69 | Mathews, Paul (1735) | Lost 0-0 | -161593 |
| 15modern | 83 | Mengucci, Andrea (1891) | Lost 1-2 | -131580 |
| top | average opponent: 1608record: 9-6 | new rating: 1580 | ||
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 558 | Homer, Daniel (1500) | Lost 0-2 | -171447 |
| 2sealed | 598 | Boutin, Jon (1554) | Won 2-0 | +201467 |
| 3sealed | 577 | Dan H., (1499) | Won 2-1 | +181485 |
| 4sealed | 418 | Burnham, Ross (1496) | Won 2-0 | +191504 |
| 5sealed | 403 | Petrosillo, Alex A (1526) | Won 2-1 | +181522 |
| 6sealed | 159 | Renner, Chris (1455) | Won 2-1 | +171539 |
| 7sealed | 140 | Santone, Gregory (1576) | Won 2-0 | +181557 |
| 8sealed | 88 | Brown, Max (1672) | Lost 1-2 | -151542 |
| 9sealed | 120 | Foley, Matthew (1568) | Won 2-0 | +181560 |
| 10sealed | 74 | Biron, Xavier (1494) | Lost 0-2 | -191541 |
| 11draft | 87 | Bradford, Harry (1552) | Won 2-1 | +181559 |
| 12draft | 114 | Zembruski, Matthew A (1629) | Lost 1-2 | -171542 |
| 13draft | 75 | Glavin, Lucas (1900) | Won 2-0 | +251567 |
| 14draft | 54 | Zembruski, Matthew A (1632) | Lost 1-2 | -171550 |
| 15draft | 19 | Winterhalter, Benjamin (1673) | Lost 1-2 | -161534 |
| 16draft | 81 | Freeman, Marcelino (1680) | Lost 1-2 | -151519 |
| top | average opponent: 1588record: 9-7 | new rating: 1519 | ||
| Grand Prix Providence 2011 (legacy) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 418 | Anderson, Bryan (1435) | Won 2-1 | +181447 |
| 2legacy | 436 | Neal, Stephen (1615) | Lost 1-2 | -151432 |
| 3legacy | 511 | Palmer, Todd (1466) | Lost 1-2 | -181414 |
| 4legacy | 613 | Smith, David B (1482) | Won 2-1 | +201434 |
| 5legacy | 616 | Zaffino, Kyle (1561) | Won 2-1 | +201454 |
| 6legacy | 558 | Huynh, Anthony (1647) | Lost 1-2 | -151439 |
| 7legacy | 545 | Carle, Vincent S (1468) | Won 2-0 | +191458 |
| 8legacy | 520 | Lowry, William (1756) | Lost 0-2 | -131445 |
| 9legacy | 503 | Gaddis, Tiffany A (1504) | Won 2-0 | +191464 |
| top | average opponent: 1548record: 5-4 | new rating: 1464 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1389 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 629 | Henry, Christopher (1518) | Won 2-0 | +201409 |
| 3standard | 667 | Grube, Peter L (1575) | Lost 1-2 | -151394 |
| 4standard | 780 | Parker, Brock (1829) | Lost 0-2 | -101384 |
| 5standard | 838 | Steigerwald, Michael (1500) | Won 2-1 | +201404 |
| 6standard | 803 | Bartlett, Nicholas T (1518) | Won 2-0 | +201424 |
| 7standard | 708 | Neeley, Dan (1558) | Lost 1-2 | -161408 |
| 8standard | 758 | Brown, Brian (1531) | Won 2-0 | +211429 |
| top | average opponent: 1576record: 4-3 | new rating: 1429 | ||
| Pro Tour Austin 2009 (extended) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 75 | Polonia, Jeremy (1446) | Lost 0-2 | -181446 |
| 2extended | 193 | Schnieders, Jacob (1467) | Lost 1-2 | -181428 |
| 3extended | 205 | Pineda, Jose (1470) | Lost 1-2 | -171411 |
| 4extended | 203 | Coqueiro, Rafael S (1664) | Lost 1-2 | -131398 |
| 5extended | 197 | Kowal, Brian (1588) | Lost 1-2 | -151383 |
| 6draft | 24 | Monsalve, Andres (1600) | Won 2-1 | +221405 |
| 7draft | 84 | Pham, Philippe (1510) | Lost 0-2 | -161389 |
| top | average opponent: 1535record: 1-6 | new rating: 1389 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 137 | Giaquinto, Frank (1496) | Lost 0-2 | -181482 |
| 3sealed | 213 | Budnick, Christopher (1465) | Won 2-1 | +181500 |
| 4sealed | 228 | Thieringer, Rob (1519) | Lost 1-2 | -181482 |
| 5sealed | 194 | Meadows, Gerald (1500) | Lost 0-2 | -181464 |
| top | average opponent: 1495record: 1-3 | new rating: 1464 | ||