Martinez, John
Current rating: 1658
Record: 19-11
| Grand Prix Dallas-Fort Worth 2018 (DOM limited) | starting rating: 1600 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 28 | Matchniff, Alexander (1500) | Won 2-0 | +161616 |
| 2sealed | 214 | Hellquist, Paul (1484) | Won 2-0 | +161632 |
| 3sealed | 128 | Stone, John (1513) | Won 2-1 | +151647 |
| 4sealed | 61 | Mendiola, Jeremiah (1615) | Won 2-0 | +181665 |
| 5sealed | 14 | Chapman, Jack (1658) | Won 2-0 | +181683 |
| 6sealed | 32 | Pierce, Stephen (1613) | Lost 1-2 | -201663 |
| 7sealed | 70 | Sabor, Max (1581) | Won 2-1 | +171680 |
| 8sealed | 23 | Simon, Michael (1776) | Lost 0-2 | -161664 |
| 9sealed | 40 | Graves, Robert (1879) | Won 2-0 | +221686 |
| 10draft | 62 | Crescenti, Christopher (1732) | Won 2-1 | +181704 |
| 11draft | 57 | Huang, Ray (1908) | Lost 0-2 | -141690 |
| 12draft | 60 | Clausen, Joe (1629) | Won 2-0 | +171707 |
| 13draft | 34 | Radsliff, Elliot (1753) | Lost 0-2 | -171690 |
| 14draft | 92 | Myers, Caleb (1697) | Lost 0-2 | -181672 |
| 15draft | 43 | Hu, Haibing (1875) | Lost 1-2 | -141658 |
| average opponent: 1681record: 9-6 | new rating: 1658 | |||
| Grand Prix Houston 2018 (RIX limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 72 | Hurt, Josh (1558) | Lost 0-2 | -171483 |
| 2sealed | 242 | Campbell, Justin (1430) | Won 2-0 | +171500 |
| 3sealed | 272 | Amaro, Luis (1538) | Lost 0-2 | -171483 |
| 4sealed | 384 | Sutton, William (1544) | Won 2-1 | +191502 |
| 5sealed | 273 | Hamilton, Chris (1558) | Won 2-1 | +191521 |
| 6sealed | 177 | Loya, Darrell (1670) | Won 2-0 | +211542 |
| 7sealed | 186 | Edelman, Charles (1769) | Won 2-1 | +221564 |
| 8sealed | 74 | Morales, Joshua (1562) | Won 2-0 | +181582 |
| 9sealed | 69 | Davis, Shawn (1555) | Lost 0-0 | -191563 |
| 10draft | 54 | Solis, Juan (1656) | Won 2-0 | +201583 |
| 11draft | 80 | Nguyen, Vinh (1470) | Lost 0-2 | -201563 |
| 12draft | 83 | Barbour, Jermaine (1551) | Won 2-1 | +181581 |
| 13draft | 81 | Vela, Jeremy (1673) | Won 2-1 | +191600 |
| 14draft | 62 | Vickers, Brandon (1621) | Lost 1-2 | -171583 |
| 15draft | 40 | Swain, Thomas (1537) | Won 2-0 | +171600 |
| average opponent: 1580record: 10-5 | new rating: 1600 | |||