Zalewski, Shawn
Current rating: 1552
Record: 30-28
| Regional Championships Toronto 2022 (pioneer) | starting rating: 1591 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 42 | Burke, Matthew (1465) | Lost 1-2 | -201571 |
| 2pioneer | 132 | Maguire, Doug (1602) | Lost 0-2 | -171554 |
| 3pioneer | 168 | Leduc Gauthier, Samuel (1588) | Won 2-1 | +181572 |
| 4pioneer | 104 | Hicks, Riley (1476) | Lost 1-2 | -201552 |
| top | average opponent: 1533record: 1-3 | new rating: 1552 | ||
| Grand Prix Niagara Falls 2019 (legacy) | starting rating: 1549 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 252 | Costa, Victor (1409) | Won 2-0 | +161565 |
| 2legacy | 75 | Moore, Mickey (1518) | Won 2-1 | +171582 |
| 3legacy | 89 | Abrams, Colton (1755) | Won 2-1 | +211603 |
| 4legacy | 12 | Asbach, John (1843) | Won 2-1 | +221625 |
| 5legacy | 27 | Eilersen, Connors (1574) | Won 2-1 | +171642 |
| 6legacy | 28 | Sikes, Roger (1567) | Lost 0-2 | -191623 |
| 7legacy | 20 | Monsees, Nathaniel (1862) | Lost 0-2 | -141609 |
| 8legacy | 144 | Biaggi, Andrea (1610) | Lost 1-2 | -181591 |
| top | average opponent: 1642record: 5-3 | new rating: 1591 | ||
| Grand Prix Toronto 2019 (modern) | starting rating: 1576 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 207 | Duffy, Damian (1500) | Lost 1-2 | -201556 |
| 2modern | 333 | Pretty, Kyle (1448) | Won 2-1 | +161572 |
| 3modern | 350 | Shay, Liam (1502) | Won 2-0 | +171589 |
| 4modern | 226 | Corriveau, Julien (1511) | Lost 1-2 | -191570 |
| 5modern | 448 | Phillips, Brett (1443) | Lost 1-2 | -211549 |
| top | average opponent: 1481record: 2-3 | new rating: 1549 | ||
| Grand Prix Toronto 2018 (modern) | starting rating: 1587 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 495 | Luis, Pedro (1500) | Lost 1-2 | -201567 |
| 2modern | 520 | Girard, Jean-Francois (1416) | Lost 1-2 | -211546 |
| 3modern | 769 | Marchand, Alexandre (1429) | Won 2-0 | +161562 |
| 4modern | 674 | Hoban, Liam [CAN] (1452) | Won 2-0 | +161578 |
| 5modern | 503 | Choi, Francis (1506) | Won 2-0 | +171595 |
| 6modern | 403 | Chatel, Zack (1529) | Lost 1-2 | -191576 |
| top | average opponent: 1472record: 3-3 | new rating: 1576 | ||
| Grand Prix Columbus 2016 (legacy) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 481 | [anonymous] | Won 2-1 | +181532 |
| 2legacy | 56 | Serwinski, Jeffrey (1519) | Lost 1-2 | -191513 |
| 3legacy | 690 | Harrison, Devin (1385) | Won 2-1 | +161529 |
| 4legacy | 539 | Li, Jinlin (1663) | Lost 1-2 | -161513 |
| 5legacy | 614 | McWhorter, Justin (1425) | Won 2-1 | +171530 |
| 6legacy | 462 | Scheibel, James (1528) | Won 2-0 | +181548 |
| 7legacy | 326 | Margolis, Max (1643) | Won 2-1 | +191567 |
| 8legacy | 250 | Firer, Harlan (1756) | Won 2-1 | +221589 |
| 9legacy | 169 | Buchner, Hans (1702) | Won 2-1 | +201609 |
| 10legacy | 106 | Cummings, Nicholas (1678) | Won 2-1 | +191628 |
| 11legacy | 26 | Smith, Evan (1799) | Lost 1-2 | -151613 |
| 12legacy | 78 | Akers, Jay (1659) | Lost 0-2 | -171596 |
| 13legacy | 99 | Merriam, Ross (1919) | Lost 0-2 | -121584 |
| 14legacy | 150 | Reilly, Devin (1556) | Won 2-0 | +171601 |
| 15legacy | 132 | Goddard, Maxwell (1783) | Lost 0-2 | -141587 |
| top | average opponent: 1632record: 9-6 | new rating: 1587 | ||
| Grand Prix Ottawa 2014 (KTK limited) | starting rating: 1545 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 363 | Robillard, Kyle (1430) | Lost 1-2 | -201525 |
| 2sealed | 458 | Lessard, John (1483) | Won 2-0 | +171542 |
| 3sealed | 532 | Majlaton, Alex (1774) | Lost 1-2 | -141528 |
| 4sealed | 438 | Risi, Geoff (1773) | Lost 1-2 | -141514 |
| top | average opponent: 1615record: 1-3 | new rating: 1514 | ||
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 393 | Chong, King (1500) | Lost 0-2 | -191521 |
| 2sealed | 614 | Veale, Geoffrey (1481) | Won 2-0 | +181539 |
| 3sealed | 458 | Michelis, Nicholas Daniel (1501) | Won 2-0 | +171556 |
| 4sealed | 288 | Boehm, Christopher (1764) | Won 2-1 | +221578 |
| 5sealed | 333 | Hendricks, Ryan (1720) | Won 2-1 | +201598 |
| 6sealed | 152 | Breslin, David (1674) | Lost 1-2 | -161582 |
| 7sealed | 287 | Smithson, Chad (1520) | Lost 1-2 | -201562 |
| 8sealed | 272 | Pare, Eric (1580) | Lost 0-2 | -171545 |
| top | average opponent: 1593record: 4-4 | new rating: 1545 | ||
| Grand Prix Toronto 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 51 | Tibaut, Mathew (1543) | Lost 1-2 | -171483 |
| 3modern | 187 | Lee, Sungho (1500) | Won 2-0 | +181501 |
| 4modern | 298 | LaPlante, Ryan (1453) | Won 2-1 | +171518 |
| 5modern | 217 | Berrios, Stephen (1705) | Lost 1-2 | -141504 |
| 6modern | 201 | Barge, Spencer (1471) | Won 2-1 | +171521 |
| 7modern | 225 | Cromwell, Collin (1574) | Won 2-1 | +191540 |
| 8modern | 126 | Uppal, Justin (1528) | Lost 0-2 | -181522 |
| 9modern | 128 | Smith, CJ [CAN] (1537) | Won 2-0 | +181540 |
| top | average opponent: 1539record: 5-3 | new rating: 1540 | ||