Summers, Marshall
Current rating: 1479
Record: 14-16-1
| Grand Prix Houston 2016 (OGW standard) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 172 | Segura, Marco (1500) | Won 2-1 | +181539 |
| 2standard | 401 | Wilson, Leroy (1518) | Lost 0-2 | -191520 |
| 3standard | 675 | Wood, Brett (1399) | Lost 1-2 | -201500 |
| 4standard | 664 | Lopeman, Michael (1377) | Won 2-1 | +161516 |
| 5standard | 415 | Saenz, Christobal (1520) | Lost 1-2 | -181498 |
| 6standard | 707 | Triplett, Donovan (1480) | Lost 1-2 | -191479 |
| top | average opponent: 1466record: 2-4 | new rating: 1479 | ||
| Grand Prix Oklahoma City 2015 (modern) | starting rating: 1452 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 439 | Reile, Josh (1524) | Won 2-1 | +191471 |
| 2modern | 86 | Sorensen, Tanner (1530) | Won 2-1 | +191490 |
| 3modern | 201 | Pierce, David M (1575) | Lost 0-0 | -161474 |
| 4modern | 304 | Glenn, Marcus (1493) | Won 2-0 | +181492 |
| 5modern | 108 | Herrell, Justin (1704) | Lost 1-2 | -141478 |
| 6modern | 335 | Lee, Michelle (1580) | Won 2-1 | +201498 |
| 7modern | 189 | Shipp, Mike (1574) | Won 2-1 | +191517 |
| 8modern | 74 | Vajda, Andy (1530) | Won 2-0 | +191536 |
| 9modern | 119 | Meier, Gregory (1719) | Lost 0-2 | -151521 |
| top | average opponent: 1581record: 6-3 | new rating: 1521 | ||
| Grand Prix Oklahoma City 2013 (THS limited) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 161 | McCoy, David (1450) | Lost 1-2 | -191446 |
| 4sealed | 408 | Crites, Timothy D (1515) | Won 2-1 | +201466 |
| 5sealed | 315 | Tarrant, Shane (1538) | Won 2-0 | +191485 |
| 6sealed | 222 | Dunbar, Heath (1567) | Lost 0-2 | -171468 |
| 7sealed | 314 | Michalak, Nicholas (1555) | Lost 0-2 | -161452 |
| top | average opponent: 1525record: 2-3 | new rating: 1452 | ||
| Grand Prix San Antonio 2012 (RTR standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 288 | Jasheway, Zach W (1434) | Won 2-0 | +171480 |
| 2standard | 52 | Nunez, Victor (1567) | Won 2-1 | +201500 |
| 3standard | 5 | Baldwin, Jonathan (1482) | Lost 0-2 | -191481 |
| 4standard | 173 | Perales, Nicholas (1516) | Won 2-1 | +191500 |
| 5standard | 147 | Lopez, Nereo (1523) | Lost 0-2 | -181482 |
| 6standard | 119 | Northcutt, Andrew (1502) | Lost 0-2 | -171465 |
| top | average opponent: 1504record: 3-3 | new rating: 1465 | ||
| Grand Prix Austin 2012 (ISD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 86 | Glass, Brandon (1500) | Lost 0-2 | -181482 |
| 2sealed | 354 | Gitch, Brittany (1482) | Draw 1-1 | 01482 |
| 3sealed | 385 | Welch, Michael (1398) | Won 2-0 | +161498 |
| 4sealed | 347 | Doerzbacher, Jonathan (1500) | Lost 1-2 | -181480 |
| 5sealed | 386 | Lewis, Rian (1485) | Lost 0-2 | -171463 |
| top | average opponent: 1473record: 1-3-1 | new rating: 1463 | ||