Zastrow, Martin
Current rating: 1467
Record: 32-39-2
| Grand Prix Cleveland 2019 (RNA limited) | starting rating: 1418 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 190 | Craig, Kurt (1449) | Won 2-0 | +191437 |
| 2sealed | 7 | He, Brandon (1688) | Won 2-1 | +221459 |
| 3sealed | 92 | Espinosa, Ivan (1863) | Won 2-0 | +251484 |
| 4sealed | 162 | Wagstaff, Evan (1914) | Lost 1-2 | -101474 |
| 5sealed | 179 | Blake, Paul (1597) | Lost 0-2 | -161458 |
| 6sealed | 278 | Weber, Cody (1702) | Won 2-0 | +221480 |
| 7sealed | 168 | Suber, Wes (1729) | Lost 1-2 | -131467 |
| top | average opponent: 1706record: 4-3 | new rating: 1467 | ||
| Grand Prix Montreal 2017 (AKH standard) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 2113 | Niskala, Trevor (1552) | Won 2-0 | +211451 |
| 3standard | 2002 | Nikolich, Benjamin (1985) | Won 2-0 | +261477 |
| 4standard | 2085 | Beldon, Omar (1825) | Lost 0-2 | -111466 |
| 5standard | 2185 | Bilodeau, Sebastian (1715) | Lost 1-2 | -141452 |
| 6standard | 2166 | Quinn, Patrick (1525) | Lost 0-2 | -171435 |
| 7standard | 2241 | Bowden, Steve (1494) | Lost 0-2 | -171418 |
| top | average opponent: 1683record: 2-4 | new rating: 1418 | ||
| Grand Prix Richmond 2017 (AKH limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 26 | Rasmussen, Ron (1389) | Lost 0-2 | -201463 |
| 3sealed | 409 | Chikasue, Alex (1500) | Won 2-1 | +191482 |
| 4sealed | 288 | Vanover, Logan (1584) | Lost 0-2 | -171465 |
| 5sealed | 566 | Pace, Stanley (1462) | Lost 0-2 | -181447 |
| 6sealed | 586 | Solomon, Nick (1500) | Lost 1-2 | -171430 |
| top | average opponent: 1487record: 1-4 | new rating: 1430 | ||
| Grand Prix New Jersey 2017 (std) (AER standard) | starting rating: 1529 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 72 | Hicks, Zachary (1465) | Won 2-1 | +171546 |
| 3standard | 370 | Friedman, Ben (1989) | Lost 1-2 | -111535 |
| 4standard | 456 | Paller, Andrew (1633) | Lost 0-2 | -161519 |
| 5standard | 630 | Ruszkowski, Michael (1586) | Lost 0-2 | -171502 |
| 6standard | 603 | Abbett, Joshua (1481) | Won 2-0 | +181520 |
| 7standard | 422 | Clark, Tyler (1535) | Lost 0-2 | -181502 |
| 8standard | 493 | Zheng, Zhen (1408) | Lost 0-2 | -191483 |
| top | average opponent: 1585record: 2-5 | new rating: 1483 | ||
| Grand Prix Pittsburgh 2017 (AER standard) | starting rating: 1568 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 173 | Esposito, Evan (1796) | Lost 1-2 | -141554 |
| 3standard | 498 | Benedict, Nicklaus (1465) | Lost 1-2 | -201534 |
| 4standard | 556 | Groner, Joshua (1450) | Won 2-0 | +171551 |
| 5standard | 471 | Bastin, Benjamin (1412) | Lost 1-2 | -211530 |
| 6standard | 500 | Marmorato, Matthew (1459) | Won 2-1 | +171547 |
| 7standard | 382 | Brown, Dylan [USA] (1565) | Lost 1-2 | -181529 |
| top | average opponent: 1525record: 2-4 | new rating: 1529 | ||
| Grand Prix Pittsburgh 2016 (SOI standard) | starting rating: 1622 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 44 | Kelley, Chad (1464) | Won 2-1 | +151637 |
| 3standard | 161 | Reilly, Benjamin (1516) | Lost 0-2 | -201617 |
| 4standard | 445 | Hearty, Kevin (1557) | Lost 0-2 | -191598 |
| 5standard | 476 | King, Kevin (1475) | Won 2-1 | +161614 |
| 6standard | 286 | Etchberger, Henry (1484) | Lost 0-2 | -201594 |
| 7standard | 463 | Rocus, Andy (1444) | Lost 1-2 | -211573 |
| 8standard | 418 | Howard, Craig (1417) | Won 2-1 | +151588 |
| 9standard | 320 | Copenhaver, Dalton (1453) | Lost 1-2 | -201568 |
| top | average opponent: 1476record: 3-5 | new rating: 1568 | ||
| Grand Prix Toronto 2016 (SOI standard) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 286 | Chan, Philip (1594) | Won 2-0 | +201465 |
| 3standard | 27 | Davis, Shane [CAN] (1562) | Lost 1-2 | -161449 |
| 4standard | 447 | Wilson, Bill (1523) | Won 2-0 | +191468 |
| 5standard | 223 | Couture, Jean-Philippe (1592) | Draw 1-1 | +31471 |
| 6standard | 202 | Brown, Taun (1487) | Won 2-1 | +181489 |
| 7standard | 143 | Barnes, Shawn (1522) | Won 2-0 | +191508 |
| 8standard | 71 | Kerrigan, Andrew (1701) | Won 2-1 | +211529 |
| 9standard | 42 | Elenbogen, Andrew (1870) | Lost 1-2 | -121517 |
| 10standard | 110 | How, Andrew (1533) | Won 2-0 | +181535 |
| 11standard | 58 | Ochoa, David (1981) | Won 1-0 | +261561 |
| 12standard | 38 | Viens, Marc-Alexandre (1702) | Draw 1-1 | +21563 |
| 13standard | 70 | Price, Aaron (1778) | Won 2-0 | +221585 |
| 14standard | 46 | Robinson, Mike (1610) | Won 2-1 | +191604 |
| 15standard | 30 | Laurin, Jean-Sebastien (1633) | Won 2-0 | +181622 |
| top | average opponent: 1649record: 10-2-2 | new rating: 1622 | ||
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 236 | Wipf, Elijah (1518) | Won 2-0 | +191474 |
| 3modern | 232 | Clock, Kevin (1611) | Lost 0-2 | -161458 |
| 4modern | 371 | VanEvery, Kevin (1534) | Lost 0-2 | -161442 |
| 5modern | 841 | Scheiber, Eric (1539) | Lost 0-2 | -161426 |
| 6modern | 893 | Wotring, Lawrence (1481) | Won 2-0 | +191445 |
| top | average opponent: 1537record: 2-3 | new rating: 1445 | ||
| Grand Prix Providence 2015 (DTK standard) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 231 | McManis, Ellen (1498) | Won 2-1 | +181464 |
| 3standard | 91 | Giles, Devon (1653) | Lost 0-2 | -141450 |
| 4standard | 330 | Larnard, Jeffrey (1519) | Lost 1-2 | -171433 |
| 5standard | 342 | Montes, Henry (1505) | Lost 1-2 | -171416 |
| 6standard | 360 | Creeden, Tyler (1483) | Won 2-0 | +201436 |
| 7standard | 290 | Stone, Jeffrey (1567) | Won 2-1 | +201456 |
| 8standard | 205 | Currie, Joshua (1360) | Won 2-0 | +161472 |
| 9standard | 129 | Collins, Derek (1499) | Lost 0-0 | -171455 |
| top | average opponent: 1511record: 4-4 | new rating: 1455 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 363 | Lewis, David (1472) | Lost 0-2 | -181482 |
| 2modern | 623 | Courtade, Brian (1462) | Won 2-1 | +171499 |
| 3modern | 467 | Mao, Canran (1500) | Lost 1-2 | -181481 |
| 4modern | 562 | Ducca, Michael (1482) | Won 2-1 | +181499 |
| 5modern | 335 | Wilson, Steve (1517) | Lost 0-2 | -181481 |
| 6modern | 438 | Hamrick, George (1483) | Lost 0-2 | -171464 |
| 7modern | 395 | Conrad, Alexander (1463) | Lost 1-2 | -181446 |
| top | average opponent: 1483record: 2-5 | new rating: 1446 | ||