Martell, William
Current rating: 1505
Record: 26-28-3
| Grand Prix Providence 2018 (M19 standard) | starting rating: 1545 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 7 | Carignan, Jacob (1447) | Lost 1-2 | -201525 |
| 2standard | 188 | Samuels, Eddie (1523) | Lost 1-2 | -181507 |
| 3standard | 319 | Hochmuth, Nick (1463) | Won 2-1 | +171524 |
| 4standard | 309 | Rindler, Jason (1464) | Lost 0-2 | -191505 |
| top | average opponent: 1474record: 1-3 | new rating: 1505 | ||
| Grand Prix Hartford 2018 (modern) | starting rating: 1601 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 206 | Campen, Steve (1550) | Lost 1-2 | -191582 |
| 3modern | 646 | Ralston, Jacob (1592) | Lost 0-2 | -181564 |
| 4modern | 778 | Kim, Eric (1480) | Lost 0-2 | -191545 |
| top | average opponent: 1541record: 0-3 | new rating: 1545 | ||
| Grand Prix New Jersey 2017 (std) (AER standard) | starting rating: 1601 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 271 | Cudkowicz, Daniel (1522) | Won 2-0 | +171618 |
| 3standard | 312 | Martinez, Mario E (1538) | Won 2-1 | +171635 |
| 4standard | 32 | Betesh, Ralph (1863) | Lost 1-2 | -141621 |
| 5standard | 358 | Shield, Jeffrey (1465) | Won 2-1 | +151636 |
| 6standard | 233 | Dempsey, Brandon (1552) | Lost 1-2 | -201616 |
| 7standard | 283 | Williamson, Michael (1649) | Won 2-1 | +191635 |
| 8standard | 182 | Pennachio, Joe (1647) | Lost 1-2 | -181617 |
| 9standard | 228 | Waksman, Adam (1734) | Lost 0-2 | -161601 |
| top | average opponent: 1621record: 4-4 | new rating: 1601 | ||
| Grand Prix Providence 2016 (KLD standard) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 173 | Berk, Joshua (1508) | Won 2-0 | +181508 |
| 2standard | 206 | Araujo, Justin (1518) | Won 2-0 | +191527 |
| 3standard | 97 | Stein, Harrison (1554) | Won 2-1 | +181545 |
| 4standard | 29 | Segarra, Andre (1494) | Won 2-1 | +171562 |
| 5standard | 21 | Gross, David (1587) | Lost 0-2 | -171545 |
| 6standard | 95 | Delcourt, Cassidy (1493) | Won 2-1 | +171562 |
| 7standard | 22 | Breitman, Alan (1715) | Won 2-1 | +201582 |
| 8standard | 50 | Cooper, Russell (1701) | Lost 0-2 | -151567 |
| 9standard | 61 | Sui, Xin (1987) | Lost 1-2 | -111556 |
| 10standard | 443 | Frankel, Josh (1732) | Lost 0-2 | -151541 |
| 11standard | 484 | Hinton, Edgar (1515) | Won 2-0 | +181559 |
| 12standard | 429 | Muir, Declan (1568) | Won 2-0 | +181577 |
| 13standard | 392 | Metcalf, Scott (1772) | Won 2-0 | +211598 |
| 14standard | 401 | Chambers, Dan (1601) | Won 2-0 | +181616 |
| 15standard | 374 | Siu, Brian (1791) | Lost 1-2 | -151601 |
| top | average opponent: 1636record: 10-5 | new rating: 1601 | ||
| Grand Prix Pittsburgh 2016 (SOI standard) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 131 | Brainard, Kyle (1500) | Won 2-1 | +191486 |
| 2standard | 102 | Nutter, James (1518) | Draw 1-1 | 01486 |
| 3standard | 350 | Shank, Allen (1551) | Won 2-1 | +191505 |
| 4standard | 179 | Springer, Harry (1478) | Lost 0-2 | -181487 |
| 5standard | 320 | Bonamico, Jared (1518) | Won 2-1 | +191506 |
| 6standard | 213 | Zink, Brandon (1619) | Lost 0-2 | -161490 |
| 7standard | 316 | Slattery, Edward (1520) | Draw 1-1 | 01490 |
| top | average opponent: 1529record: 3-2-2 | new rating: 1490 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 188 | Allen, Jonathan (1660) | Lost 1-2 | -151500 |
| 4sealed | 208 | Hillery, Jarom (1518) | Lost 1-2 | -181482 |
| 5sealed | 275 | Christensson, Thommy (1646) | Lost 1-2 | -151467 |
| top | average opponent: 1608record: 0-3 | new rating: 1467 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 62 | Lo, William (1558) | Draw 1-1 | 01515 |
| 4legacy | 156 | Cole, Andy (1466) | Lost 1-2 | -191496 |
| 5legacy | 280 | Middleton, Greg (1515) | Won 2-0 | +191515 |
| 6legacy | 180 | Herniter, Ira (1488) | Won 2-1 | +171532 |
| 7legacy | 108 | Wong, Chris (1576) | Lost 0-2 | -171515 |
| top | average opponent: 1521record: 2-2-1 | new rating: 1515 | ||
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 403 | Sirak, Brandon (1518) | Won 2-0 | +191484 |
| 3sealed | 291 | Jones, Brandon (1553) | Lost 0-2 | -171467 |
| 4sealed | 303 | Cheung, Terrence (1629) | Won 2-0 | +211488 |
| 5sealed | 314 | Krodel, Brett (1497) | Lost 0-2 | -181470 |
| 6sealed | 331 | Yeung, Ling (1673) | Won 2-0 | +221492 |
| 7sealed | 158 | James, William (1519) | Won 2-1 | +191511 |
| 8sealed | 156 | Oleksiw, William (1560) | Won 0-0 | +181529 |
| 9sealed | 52 | Kaplan, Lain (1704) | Lost 0-2 | -141515 |
| top | average opponent: 1582record: 5-3 | new rating: 1515 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 241 | Fuhrman, Curtis (1517) | Lost 0-2 | -181482 |
| 3modern | 508 | Sitsis, Adam (1503) | Lost 0-2 | -171465 |
| 4modern | 572 | Mapson, Michael (1448) | Won 2-0 | +171482 |
| 5modern | 487 | Campbell, Eric (1520) | Lost 0-2 | -171465 |
| top | average opponent: 1497record: 1-3 | new rating: 1465 | ||