Zamba, Xander
Current rating: 1497
Record: 32-34-1
| Grand Prix Minneapolis 2017 (HOU standard) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 223 | Valadares, Diogo (1544) | Won 2-0 | +191526 |
| 3standard | 41 | Haversat, Jacob (1963) | Lost 1-2 | -111515 |
| 4standard | 186 | Singer, Jared (1698) | Lost 1-2 | -141501 |
| 5standard | 297 | Mendola, Anthony (1497) | Lost 1-2 | -181483 |
| 6standard | 365 | Lettieri, Matt (1371) | Won 2-0 | +161499 |
| 7standard | 274 | Silveira, Reynner (1487) | Won 2-1 | +171516 |
| 8standard | 276 | Rodriguez, Jescy (1443) | Lost 1-2 | -191497 |
| top | average opponent: 1572record: 3-4 | new rating: 1497 | ||
| Grand Prix Pittsburgh 2017 (AER standard) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 122 | Martini, Matthew (1552) | Lost 0-2 | -171502 |
| 3standard | 394 | Dennis, Brandon (1501) | Lost 0-2 | -181484 |
| 4standard | 532 | Walko, John (1685) | Lost 0-2 | -151469 |
| 5standard | 566 | Tomko, Ryan (1448) | Won 2-1 | +181487 |
| 6standard | 499 | Welch, Steven (1444) | Won 2-0 | +171504 |
| 7standard | 367 | Johnson, Erik (1615) | Won 2-0 | +201524 |
| 8standard | 322 | Brown, Dylan [USA] (1583) | Lost 0-2 | -171507 |
| top | average opponent: 1547record: 3-4 | new rating: 1507 | ||
| Grand Prix Milwaukee 2016 (KLD limited) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 227 | Wydra, Justin (1572) | Won 2-0 | +191510 |
| 3sealed | 197 | Anderson, William (1577) | Draw 1-1 | +21512 |
| 4sealed | 151 | Berger, Jeremy (1474) | Won 2-1 | +171529 |
| 5sealed | 76 | Lafleur, Collin (1569) | Won 2-0 | +191548 |
| 6sealed | 37 | McKernan, Elizabeth (1575) | Lost 1-2 | -181530 |
| 7sealed | 113 | Check, Matthew (1634) | Lost 0-2 | -161514 |
| 8sealed | 197 | Maurer, Joshua (1542) | Won 2-0 | +181532 |
| 9sealed | 133 | Parke, Jamie (1789) | Lost 0-2 | -131519 |
| top | average opponent: 1591record: 4-3-1 | new rating: 1519 | ||
| Grand Prix Indianapolis 2016 (modern) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 34 | Johnson, Steve E (1461) | Won 2-1 | +171502 |
| 3modern | 378 | Blanchet, Eric (1586) | Won 2-0 | +201522 |
| 4modern | 16 | Mascioli, Chris (1823) | Lost 0-2 | -131509 |
| 5modern | 406 | Throop, Adrian (1378) | Lost 1-2 | -201489 |
| 6modern | 463 | Martino, Thomas (1445) | Won 2-0 | +171506 |
| 7modern | 242 | Pound, David (1602) | Won 2-0 | +201526 |
| 8modern | 188 | Pitts, Eric (1582) | Lost 1-2 | -171509 |
| 9modern | 388 | Marks, Keith (1502) | Lost 0-2 | -181491 |
| top | average opponent: 1547record: 4-4 | new rating: 1491 | ||
| Grand Prix Pittsburgh 2016 (SOI standard) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 68 | Killea, Thomas (1492) | Lost 0-2 | -191502 |
| 3standard | 388 | Hemmerlin, Mark (1499) | Won 2-1 | +181520 |
| 4standard | 334 | Zeffert, Daniel (1562) | Lost 1-2 | -171503 |
| 5standard | 430 | Ewell, Oliver (1491) | Won 2-0 | +181521 |
| 6standard | 355 | Lam, Liquan (1550) | Lost 0-2 | -181503 |
| 7standard | 366 | Cafaro, Tom (1478) | Lost 0-2 | -181485 |
| top | average opponent: 1512record: 2-4 | new rating: 1485 | ||
| Grand Prix Minneapolis 2016 (SOI standard) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 215 | Siglock, Robert (1502) | Won 2-0 | +181561 |
| 3standard | 281 | Atkins, Gabe (1519) | Won 2-0 | +171578 |
| 4standard | 158 | Beard, Scott (1556) | Lost 0-2 | -191559 |
| 5standard | 192 | Troiano, Francesco (1576) | Lost 1-2 | -171542 |
| 6standard | 390 | Felling, Darren (1519) | Won 2-0 | +171559 |
| 7standard | 280 | Manthei, Andrew (1458) | Lost 1-2 | -201539 |
| 8standard | 357 | Verrall, Nicholas (1510) | Lost 1-2 | -181521 |
| top | average opponent: 1520record: 3-4 | new rating: 1521 | ||
| Grand Prix Detroit 2016 (modern) | starting rating: 1527 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 161 | Henderson, Douglas (1456) | Won 2-1 | +171544 |
| 2modern | 22 | Cook, Francis (1518) | Lost 0-2 | -191525 |
| 3modern | 760 | Campagna, Adam (1499) | Won 2-0 | +181543 |
| 4modern | 324 | Ferree, Alyssa (1524) | Won 2-0 | +181561 |
| 5modern | 398 | Hutchinson, Jim (1534) | Won 2-0 | +171578 |
| 6modern | 105 | Seidl, Daniel (1658) | Lost 0-2 | -171561 |
| 7modern | 270 | Seevers, Nate (1548) | Won 2-0 | +181579 |
| 8modern | 175 | Fry, Justin (1556) | Lost 1-2 | -181561 |
| 9modern | 312 | Coval, Brian (1590) | Lost 1-2 | -181543 |
| top | average opponent: 1543record: 5-4 | new rating: 1543 | ||
| Grand Prix Indianapolis 2015 (BFZ standard) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 270 | Leeka, Ryan (1500) | Lost 0-2 | -181487 |
| 2standard | 363 | Pannel, Adam (1487) | Won 2-1 | +181505 |
| 3standard | 265 | Boatwright, Steve (1470) | Lost 1-2 | -191486 |
| 4standard | 464 | Menacher, Nick (1480) | Won 2-0 | +181504 |
| 5standard | 389 | Michl, Adam (1495) | Lost 1-2 | -181486 |
| 6standard | 367 | Wild, Nicholas (1482) | Won 2-1 | +181504 |
| 7standard | 261 | Kelley, Bobby (1527) | Won 2-0 | +181522 |
| 8standard | 231 | Frederick, Jacob (1632) | Lost 1-2 | -161506 |
| 9standard | 202 | Jetha, David (1663) | Won 0-0 | +211527 |
| top | average opponent: 1526record: 5-4 | new rating: 1527 | ||
| Grand Prix Madison 2015 (BFZ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 456 | Ford, Brent (1500) | Won 2-1 | +181518 |
| 2sealed | 151 | Reed, Randy (1469) | Lost 0-2 | -191499 |
| 3sealed | 329 | Boland, Ray (1505) | Won 2-0 | +181517 |
| 4sealed | 396 | O'Bryant, Christopher (1649) | Won 2-0 | +211538 |
| 5sealed | 277 | Bastien, Jameson (1540) | Lost 0-2 | -181520 |
| 6sealed | 1021 | Ancelmo, Fabio (1699) | Lost 1-2 | -151505 |
| top | average opponent: 1560record: 3-3 | new rating: 1505 | ||