Lewis, David
Current rating: 1421
Record: 16-21-4
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 527 | Martinez, Emmanuel (1470) | Lost 0-2 | -181421 |
| top | record: 0-1 | new rating: 1421 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 307 | Shaw, Justin (1500) | Lost 0-2 | -181473 |
| 2sealed | 523 | Faas, Jason (1446) | Lost 0-2 | -181455 |
| 3sealed | 874 | Barker, Bree (1412) | Won 2-0 | +171472 |
| 4sealed | 664 | Keeler, April (1481) | Won 2-1 | +181490 |
| 5sealed | 577 | Mathis, Justin (1539) | Lost 1-2 | -171473 |
| 6sealed | 585 | Nieckarz Jr., Peter (1482) | Draw 1-1 | 01473 |
| 7sealed | 498 | Schneider, Mark (1497) | Lost 0-2 | -171456 |
| 8sealed | 401 | Baker, Justin (1505) | Lost 0-2 | -171439 |
| top | average opponent: 1483record: 2-5-1 | new rating: 1439 | ||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1547 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 513 | Brooks, Matthew D (1500) | Lost 1-2 | -191528 |
| 2modern | 515 | Cronin, Jonathan (1530) | Lost 1-2 | -181510 |
| 3modern | 602 | Tripp, Robert E (1464) | Lost 0-2 | -191491 |
| top | average opponent: 1498record: 0-3 | new rating: 1491 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 363 | Zastrow, Martin (1500) | Won 2-0 | +191491 |
| 2modern | 145 | Chromulak, Jeffrey (1511) | Won 2-0 | +181509 |
| 3modern | 52 | Cornwell-Shiel, Chris (1473) | Lost 0-2 | -181491 |
| 4modern | 235 | Husted, Joshua (1591) | Won 2-1 | +191510 |
| 5modern | 182 | Collins, Eric (1475) | Draw 1-1 | 01510 |
| 6modern | 207 | Daugherty, Jeremy (1510) | Won 2-0 | +181528 |
| 7modern | 115 | Dempsey, Brandon (1539) | Lost 1-2 | -181510 |
| 8modern | 212 | Wheat, Ian (1533) | Won 2-0 | +181528 |
| 9modern | 134 | Hunt, Joseph (1551) | Won 2-0 | +191547 |
| top | average opponent: 1520record: 6-2-1 | new rating: 1547 | ||
| Grand Prix Houston 2013 (DGM limited) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 162 | Gill, Colin (1462) | Lost 0-2 | -191488 |
| 2sealed | 276 | Belanger, Zachary (1483) | Won 2-0 | +181506 |
| 3sealed | 280 | Haines, Cody (1439) | Draw 1-1 | -11505 |
| 4sealed | 298 | Lo, William Y (1450) | Lost 0-2 | -191486 |
| 5sealed | 97 | Schubert, Damion (1499) | Lost 0-2 | -181468 |
| 6sealed | 306 | Spooner, Timothy (1445) | Won 2-0 | +181486 |
| 7sealed | 242 | Benitez, Jose (1498) | Won 2-0 | +181504 |
| 8sealed | 185 | Hitz, Michael (1599) | Lost 0-2 | -161488 |
| 9sealed | 160 | Moore, John (1623) | Lost 0-2 | -161472 |
| top | average opponent: 1500record: 3-5-1 | new rating: 1472 | ||
| Grand Prix Austin 2012 (ISD limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 30 | Cash, Brett (1500) | Won 2-0 | +191483 |
| 2sealed | 91 | BRUCE, NICHOLAS (1500) | Won 2-1 | +181501 |
| 3sealed | 12 | Gonzalez, Rudy (1536) | Draw 1-1 | 01501 |
| 4sealed | 153 | Black, Alex (1614) | Lost 0-2 | -151486 |
| 5sealed | 243 | Jenkins, Matt T (1516) | Won 2-0 | +181504 |
| 6sealed | 157 | COFFEY, DAVID (1538) | Won 2-0 | +191523 |
| 7sealed | 102 | Koessel, Noah (1539) | Lost 1-2 | -181505 |
| 8sealed | 168 | Pannell, Thomas (1694) | Lost 0-2 | -151490 |
| 9sealed | 163 | Watson, DeQuan (1428) | Won 2-1 | +171507 |
| top | average opponent: 1541record: 5-3-1 | new rating: 1507 | ||
| Grand Prix Las Vegas 2001 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 77 | Mahoney, Joe (1519) | Lost 1-2 | -181482 |
| 3extended | 102 | Fischer, Adam (1457) | Lost 1-2 | -181464 |
| top | average opponent: 1488record: 0-2 | new rating: 1464 | ||