Lewis, Mark
Current rating: 1433
Record: 7-12
| Grand Prix Los Angeles 2014 (KTK standard) | starting rating: 1418 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 413 | Leising, Gavin (1500) | Lost 0-2 | -161402 |
| 2standard | 630 | Norris, Benjamin (1531) | Won 2-0 | +201422 |
| 3standard | 701 | Maguire, Sean (1482) | Won 2-0 | +191441 |
| 4standard | 442 | Akiyama, Justin (1656) | Won 2-1 | +221463 |
| 5standard | 211 | Dean, Jeremy (1540) | Won 2-1 | +201483 |
| 6standard | 200 | Hill, Jake (1634) | Lost 0-2 | -161467 |
| 7standard | 176 | Stittsworth, Brian (1511) | Lost 1-2 | -171450 |
| 8standard | 331 | Hennes, Lucas (1484) | Lost 0-2 | -171433 |
| top | average opponent: 1542record: 4-4 | new rating: 1433 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 864 | Martin, Adam (1412) | Lost 0-2 | -181413 |
| 2standard | 910 | Hornyak, Kayla (1482) | Won 2-1 | +191432 |
| 3standard | 881 | Cooper, Ryan (1536) | Lost 1-2 | -161416 |
| 4standard | 1000 | deQuillettes, K.C. (1488) | Lost 1-2 | -171399 |
| 5standard | 956 | Alexander, William (1464) | Won 2-1 | +191418 |
| top | average opponent: 1476record: 2-3 | new rating: 1418 | ||
| Grand Prix New Jersey 2006 (TSP limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 50 | Kaplan, Ben (1500) | Won 2-0 | +191465 |
| 2sealed | 11 | Esposito, John (1521) | Lost 0-2 | -171448 |
| 3sealed | 239 | Petagna, Ralph (1506) | Lost 0-2 | -171431 |
| top | average opponent: 1509record: 1-2 | new rating: 1431 | ||
| Grand Prix Columbus 2004 (DST limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 51 | Marks, Marty (1465) | Lost 1-2 | -191481 |
| 2sealed | 263 | Markowitz, Aaron (1481) | Lost 0-2 | -181463 |
| 3sealed | 333 | Noland, Donald (1507) | Lost 0-2 | -171446 |
| top | average opponent: 1484record: 0-3 | new rating: 1446 | ||