Armstrong, John
Current rating: 1540
Record: 33-36-1
| Regional Championships Atlanta 2023 (pioneer) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 60 | Treadway, Henry (1500) | Lost 1-2 | -181465 |
| 2pioneer | 633 | Andringa, Jonathan (1485) | Won 2-0 | +181483 |
| 3pioneer | 354 | White, John (1479) | Won 2-0 | +181501 |
| 4pioneer | 247 | Nollen, Dylan (1934) | Won 2-1 | +261527 |
| 5pioneer | 78 | Phan, Brandon (1551) | Won 2-0 | +181545 |
| 6pioneer | 231 | Zhang, Rei (1892) | Won 2-1 | +241569 |
| 7pioneer | 43 | Kaner, Francesco (1565) | Won 2-0 | +181587 |
| 8pioneer | 16 | Anders, Emily (1654) | Lost 1-2 | -171570 |
| 9pioneer | 27 | Powell, Piper (1777) | Lost 0-2 | -141556 |
| 10pioneer | 88 | Dufour, David (1677) | Lost 0-2 | -161540 |
| top | average opponent: 1651record: 6-4 | new rating: 1540 | ||
| Regional Championships Atlanta 2022 (pioneer) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 1379 | Zhu, David (1872) | Lost 0-2 | -121522 |
| 2pioneer | 1336 | Dunlap, Jacob (1420) | Lost 1-2 | -201502 |
| 3pioneer | 1382 | Eslyn, Austin (1517) | Won 2-0 | +181520 |
| 4pioneer | 1238 | King, Alexis (1483) | Lost 1-2 | -191501 |
| 5pioneer | 1373 | clark, coleman (1466) | Lost 1-2 | -181483 |
| top | average opponent: 1552record: 1-4 | new rating: 1483 | ||
| Grand Prix Houston 2016 (OGW standard) | starting rating: 1458 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 556 | Williams, Frederick (1500) | Won 2-0 | +191477 |
| 2standard | 288 | Bell, Joey (1518) | Won 2-0 | +191496 |
| 3standard | 8 | Waters, Aaron (1582) | Won 2-0 | +191515 |
| 4standard | 160 | Wilson, Jacob (1928) | Lost 1-2 | -111504 |
| 5standard | 133 | Espinosa, Carlos (1536) | Lost 1-2 | -171487 |
| 6standard | 475 | Trotman, Kerry (1513) | Won 2-1 | +181505 |
| 7standard | 163 | Martinez, Amando (1506) | Won 2-0 | +181523 |
| 8standard | 205 | Rozell, Ross (1554) | Won 2-0 | +191542 |
| 9standard | 104 | Wilding, Eric (1581) | Lost 0-2 | -171525 |
| 10standard | 209 | Lee, Brian (1736) | Lost 0-2 | -141511 |
| 11standard | 227 | Escobar, Nick (1576) | Won 2-0 | +191530 |
| 12standard | 176 | Copenhaver, Dalton (1665) | Won 2-0 | +201550 |
| 13standard | 156 | Desposito, Nicolas (1631) | Lost 0-2 | -161534 |
| top | average opponent: 1602record: 8-5 | new rating: 1534 | ||
| Grand Prix Houston 2013 (DGM limited) | starting rating: 1493 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 201 | Barrera, Omar (1515) | Lost 1-2 | -171476 |
| 3sealed | 171 | Bushek, Colton (1500) | Lost 0-2 | -181458 |
| top | average opponent: 1508record: 0-2 | new rating: 1458 | ||
| Grand Prix Charlotte 2013 (GTC limited) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 138 | Malka, Sol (1786) | Lost 0-2 | -131492 |
| 5sealed | 86 | West, Chris (1536) | Won 2-1 | +191511 |
| 6sealed | 135 | McConahie, Jesse (1540) | Won 2-0 | +181529 |
| 7sealed | 88 | Reed, David (1505) | Lost 1-2 | -181511 |
| 8sealed | 85 | Copersito, Joey (1552) | Lost 1-2 | -181493 |
| top | average opponent: 1584record: 2-3 | new rating: 1493 | ||
| Grand Prix Orlando 2012 (ISD standard) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 204 | Albizu, Enrique (1516) | Won 2-1 | +201477 |
| 3standard | 35 | Ajemian, Christopher (1518) | Won 2-0 | +181495 |
| 4standard | 113 | Mirghahari, Ali (1508) | Lost 1-2 | -171478 |
| 5standard | 114 | Jarusinsky, Jason (1490) | Won 2-0 | +181496 |
| 6standard | 57 | Perlin, Leonid (1557) | Won 2-0 | +191515 |
| 7standard | 75 | Emfinger, Stacy (1465) | Won 2-1 | +171532 |
| 8standard | 21 | Wescoe, Craig (1968) | Lost 0-2 | -111521 |
| 9standard | 38 | Lachaud, Remy (1594) | Lost 1-2 | -161505 |
| top | average opponent: 1577record: 5-3 | new rating: 1505 | ||
| Grand Prix Austin 2012 (ISD limited) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 234 | Villareal, Gilbert (1539) | Lost 0-2 | -171455 |
| 3sealed | 288 | O'Loughlin, Trevor (1500) | Won 2-0 | +191474 |
| 4sealed | 233 | Gonzales, Casey M (1509) | Won 2-1 | +181492 |
| 5sealed | 132 | Ho, Fang (1518) | Lost 1-2 | -171475 |
| 6sealed | 185 | Klopchic, Luke (1433) | Won 2-0 | +171492 |
| 7sealed | 104 | Wagoner, Clint (1520) | Lost 0-2 | -171475 |
| 8sealed | 182 | Fisher, Tanner (1520) | Lost 1-2 | -181457 |
| top | average opponent: 1506record: 3-4 | new rating: 1457 | ||
| Grand Prix Denver 2011 (MBS limited) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 450 | Juza, Martin (1914) | Lost 0-2 | -101476 |
| 5sealed | 472 | Kim, Alex (1785) | Won 2-1 | +231499 |
| 6sealed | 437 | Snow, Josh D (1520) | Draw 1-1 | +11500 |
| 7sealed | 436 | Walters, Russ (1554) | Won 2-1 | +191519 |
| 8sealed | 424 | Smith III, Floyd (1498) | Won 2-0 | +171536 |
| 9sealed | 412 | Pannell, Thomas (1703) | Lost 0-2 | -151521 |
| 10draft | 63 | Hendrickson, Mark (1668) | Lost 0-2 | -151506 |
| 11draft | 35 | Chestnut, Robin (1537) | Lost 0-2 | -181488 |
| 13draft | 42 | Horne, Alan (1558) | Lost 1-2 | -161472 |
| top | average opponent: 1637record: 3-5-1 | new rating: 1472 | ||
| Grand Prix Atlanta 2011 (extended) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 4 | Shea, Hunter W (1539) | Won 2-0 | +191503 |
| 2extended | 51 | Oliff, Jesse (1574) | Lost 0-2 | -171486 |
| 3extended | 191 | Jones, Jeff (1520) | Won 2-1 | +191505 |
| 4extended | 143 | Neuenschwander, Erich (1505) | Won 2-0 | +181523 |
| 5extended | 127 | Pearlman, Steven (1475) | Lost 0-2 | -191504 |
| 6extended | 134 | Dalton, Trevor L (1525) | Lost 0-2 | -181486 |
| top | average opponent: 1523record: 3-3 | new rating: 1486 | ||
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 460 | Spellman, Bryan (1500) | Lost 0-2 | -181482 |
| 2sealed | 664 | Adams, Josh (1518) | Won 2-0 | +191501 |
| 3sealed | 584 | Eddy, Austin W (1500) | Lost 1-2 | -181483 |
| 4sealed | 642 | Baker, James M (1548) | Won 2-0 | +191502 |
| 5sealed | 623 | Samson, Daniel (1509) | Lost 1-2 | -181484 |
| top | average opponent: 1515record: 2-3 | new rating: 1484 | ||