Zdrojewski, Ian
Current rating: 1643
Record: 43-38-7
Grand Prix Chicago 2009Grand Prix Boston 2009Grand Prix Washington DC 2010Grand Prix Pittsburgh 2011Grand Prix Toronto 2012Grand Prix Detroit 2013Grand Prix Boston-Worcester 2014Grand Prix Detroit 2016Grand Prix Toronto 2016Grand Prix Pittsburgh 2017Grand Prix Toronto 2019Grand Prix Niagara Falls 2019Regional Championships Atlanta 2023
| Regional Championships Atlanta 2023 (pioneer) | starting rating: 1615 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 371 | Normandin, Katharine (1440) | Lost 1-2 | -211594 |
| 2pioneer | 516 | Hill, Max (1509) | Won 2-1 | +161610 |
| 3pioneer | 418 | French, Mae (1493) | Won 2-1 | +161626 |
| 4pioneer | 212 | Klunpaitoon, Benjamin (1617) | Lost 0-2 | -181608 |
| 5pioneer | 240 | Dunn, Ethan (1592) | Lost 0-2 | -181590 |
| 6pioneer | 459 | Kroeger, Brett (1624) | Won 2-1 | +181608 |
| 7pioneer | 354 | Tu, Nicholas (1498) | Won 2-0 | +161624 |
| 8pioneer | 220 | Gilbert-Avila, Jackie (1521) | Won 2-1 | +161640 |
| 9pioneer | 196 | Carlton, Liam (1750) | Won 2-1 | +201660 |
| 10pioneer | 149 | Friedman, Matt (1725) | Lost 0-2 | -171643 |
| top | average opponent: 1577record: 6-4 | new rating: 1643 | ||
| Grand Prix Niagara Falls 2019 (legacy) | starting rating: 1605 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 212 | Naylor, Jamie (1937) | Won 2-1 | +241629 |
| 4legacy | 31 | Corman-Gill, Cyrus (1724) | Lost 0-2 | -171612 |
| 5legacy | 204 | Shukla, Neeraj (1680) | Lost 0-2 | -161596 |
| 6legacy | 167 | De Sousa, Mathew (1461) | Won 2-1 | +151611 |
| 7legacy | 194 | Arquette, James (1573) | Won 2-1 | +171628 |
| 8legacy | 63 | Jones, Kevin (1873) | Lost 1-2 | -131615 |
| top | average opponent: 1708record: 3-3 | new rating: 1615 | ||
| Grand Prix Toronto 2019 (modern) | starting rating: 1615 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 133 | Antoine, Luc (1439) | Won 2-1 | +151630 |
| 2modern | 40 | Hall, Dylan (1559) | Lost 1-2 | -201610 |
| 3modern | 287 | Breault, Jason (1423) | Draw 1-1 | -31607 |
| 4modern | 410 | Straker, Ellis (1503) | Won 2-0 | +161623 |
| 5modern | 268 | Abraham, Ryan (1607) | Lost 1-2 | -181605 |
| top | average opponent: 1506record: 2-2-1 | new rating: 1605 | ||
| Grand Prix Pittsburgh 2017 (AER standard) | starting rating: 1614 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 291 | Miller, Andrew (1612) | Won 2-1 | +181632 |
| 2standard | 240 | Ambler, Kevin (1598) | Lost 1-2 | -191613 |
| 3standard | 357 | O'Dell, Luke (1367) | Lost 1-2 | -221591 |
| 4standard | 506 | Smith, Markus (1494) | Won 2-0 | +161607 |
| 5standard | 473 | Isaacoff, Brett (1504) | Won 2-0 | +161623 |
| 6standard | 260 | Turcotte, Owen (1458) | Draw 1-1 | -31620 |
| 7standard | 325 | Trnka, Christian (1515) | Draw 1-1 | -11619 |
| 8standard | 392 | Lassen, Nicholas (1596) | Lost 1-2 | -191600 |
| 9standard | 387 | Broad, Breanna (1420) | Won 2-0 | +151615 |
| top | average opponent: 1507record: 4-3-2 | new rating: 1615 | ||
| Grand Prix Toronto 2016 (SOI standard) | starting rating: 1646 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 181 | Kesminas, Paul (1463) | Lost 1-2 | -211625 |
| 2standard | 574 | Hall, Alexander [CAN] (1479) | Won 2-0 | +151640 |
| 3standard | 409 | Hawton, Mathew (1499) | Lost 1-2 | -211619 |
| 4standard | 611 | Bradley, Jackson (1481) | Won 2-1 | +161635 |
| 5standard | 560 | Lerman, Luke (1485) | Lost 0-2 | -211614 |
| top | average opponent: 1482record: 2-3 | new rating: 1614 | ||
| Grand Prix Detroit 2016 (modern) | starting rating: 1629 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 669 | McClenaghan, David (1682) | Lost 0-2 | -171612 |
| 2modern | 942 | Halbisen, Kyle (1478) | Lost 0-2 | -201592 |
| 3modern | 1109 | Castellon, Reynaldo (1464) | Won 2-1 | +161608 |
| 4modern | 911 | Vanderpoel, Spencer (1564) | Won 2-1 | +171625 |
| 5modern | 583 | Reed, Robert (1501) | Won 2-1 | +161641 |
| 6modern | 508 | Cartier, Matthew (1569) | Won 2-1 | +161657 |
| 7modern | 289 | Brown, Andrew (1901) | Won 2-0 | +231680 |
| 8modern | 225 | Boese, Travis (1904) | Lost 1-2 | -141666 |
| 9modern | 442 | Andrews, Joey (1561) | Lost 1-2 | -201646 |
| top | average opponent: 1625record: 5-4 | new rating: 1646 | ||
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1454 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 77 | Manly, Trevor (1482) | Won 2-1 | +191473 |
| 2modern | 70 | Gotthardt, Ben (1508) | Won 2-1 | +181491 |
| 3modern | 33 | Moreau, Robert (1574) | Lost 0-2 | -161475 |
| 4modern | 301 | Brassard, Scott (1522) | Won 2-1 | +191494 |
| 5modern | 121 | Savran, Michelle (1537) | Won 2-1 | +191513 |
| 6modern | 49 | Brady, Patrick (1542) | Won 2-1 | +181531 |
| 7modern | 48 | Pine, Michael (1537) | Lost 1-2 | -181513 |
| 8modern | 91 | Caito, Benjamin (1550) | Won 2-0 | +191532 |
| 9modern | 91 | Chabot, Karl (1542) | Won 2-0 | +181550 |
| 10modern | 57 | Tietze, Maxwell (1849) | Draw 1-1 | +51555 |
| 11modern | 88 | Majors, Michael (1933) | Won 2-1 | +251580 |
| 12modern | 53 | Neufeldt, Alexander (1757) | Lost 1-2 | -151565 |
| 13modern | 85 | Kuranda, Matthew (1570) | Won 2-1 | +181583 |
| 14modern | 61 | Sigrist, Mike (2075) | Won 0-0 | +271610 |
| 15modern | 41 | Moskal, Greg (1713) | Won 2-0 | +191629 |
| top | average opponent: 1646record: 11-3-1 | new rating: 1629 | ||
| Grand Prix Detroit 2013 (modern) | starting rating: 1422 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 220 | Dixon, Jason (1566) | Won 2-0 | +211443 |
| 2modern | 105 | Castillo-Vergara, Franklyn (1526) | Won 0-0 | +201463 |
| 3modern | 267 | Karczewski, Matt (1571) | Won 2-0 | +191482 |
| 4modern | 119 | Vergo, Eric (1680) | Lost 0-2 | -141468 |
| 5modern | 112 | Hess, Tony (1629) | Draw 1-1 | +31471 |
| 6modern | 219 | Davis, Samar (1546) | Lost 1-2 | -171454 |
| top | average opponent: 1586record: 3-2-1 | new rating: 1454 | ||
| Grand Prix Toronto 2012 (modern) | starting rating: 1384 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 139 | Duffield, Ryan (1500) | Won 2-1 | +201404 |
| 2modern | 102 | Bergeron, Julien (1517) | Lost 0-2 | -161388 |
| 3modern | 356 | Vasil, Jeremy (1468) | Won 2-1 | +191407 |
| 4modern | 183 | Choi, Francis (1518) | Won 2-0 | +201427 |
| 5modern | 138 | Dafoe, Braden (1504) | Won 2-0 | +201447 |
| 6modern | 141 | Brooks, Daniel (1647) | Lost 1-2 | -151432 |
| 7modern | 196 | Hurst, Cameron (1534) | Won 2-0 | +201452 |
| 8modern | 139 | Reid, James (1687) | Lost 0-2 | -141438 |
| 9modern | 145 | Knox, Dustin (1552) | Lost 0-2 | -161422 |
| top | average opponent: 1547record: 5-4 | new rating: 1422 | ||
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1388 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 9 | Evans, Brandon (1500) | Won 2-0 | +201408 |
| 2standard | 125 | Dickmann, Patrick (1798) | Lost 0-2 | -111397 |
| 3standard | 393 | Usary, Marsh (1472) | Won 2-0 | +191416 |
| 4standard | 376 | Krueger, Steve (1513) | Lost 0-2 | -161400 |
| 5standard | 446 | Payton, Tony (1484) | Lost 0-2 | -161384 |
| top | average opponent: 1553record: 2-3 | new rating: 1384 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 78 | Perrotta, Jake (1500) | Lost 0-2 | -171412 |
| 5standard | 109 | Snepvangers, Bram (1844) | Lost 1-2 | -101402 |
| 6standard | 201 | Aracich, Jim (1651) | Lost 1-2 | -141388 |
| top | average opponent: 1665record: 0-3 | new rating: 1388 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 222 | Jutras, Chris (1500) | Draw 1-1 | +11464 |
| 2sealed | 203 | Slattery, Collin (1498) | Lost 0-2 | -181446 |
| 3sealed | 291 | Erskine, Ryan (1482) | Lost 0-2 | -171429 |
| top | average opponent: 1493record: 0-2-1 | new rating: 1429 | ||
| Grand Prix Chicago 2009 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 36 | Graham, Nathaniel (1464) | Lost 0-2 | -191481 |
| 2legacy | 471 | Janasiewicz, Jason (1468) | Draw 1-1 | 01481 |
| 3legacy | 466 | Powers, Daniel (1480) | Lost 1-2 | -181463 |
| top | average opponent: 1470record: 0-2-1 | new rating: 1463 | ||