Costa, Evan
Current rating: 1519
Record: 18-21-1
| Regional Championships Toronto 2023 (pioneer) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 135 | Anderson, Tyler (1644) | Won 2-0 | +201508 |
| 2pioneer | 49 | Michaud, Noah (1518) | Lost 0-2 | -171491 |
| 3pioneer | 64 | Cadieux, Alexandre (1531) | Draw 1-1 | 01491 |
| 4pioneer | 78 | Arcand, Philippe (1501) | Won 2-0 | +191510 |
| 5pioneer | 49 | Gadoua, Benjamin (1495) | Won 2-0 | +171527 |
| 6pioneer | 30 | Santangelo, Joshua (1636) | Lost 0-2 | -161511 |
| 7pioneer | 57 | Maynard, Andrew (1502) | Won 2-1 | +181529 |
| 8pioneer | 37 | Sajgalik, Eduardo (1984) | Lost 1-2 | -101519 |
| top | average opponent: 1601record: 4-3-1 | new rating: 1519 | ||
| Regional Championships Ottawa 2023 (ONE standard) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 95 | Paterson, Cole (1456) | Won 2-0 | +171516 |
| 2standard | 17 | Wu, Patrick (1618) | Lost 0-2 | -161500 |
| 3standard | 54 | Dery, Jonathan (1803) | Lost 0-2 | -131487 |
| 4standard | 80 | Bernier, Gabriel (1549) | Won 2-1 | +191506 |
| 5standard | 75 | Scott, Jarred (1465) | Won 2-1 | +171523 |
| 6standard | 41 | Dunkelman, Steven (1524) | Lost 1-2 | -181505 |
| 7standard | 72 | Laforce-Francoeur, Virgile (1516) | Lost 1-2 | -171488 |
| top | average opponent: 1562record: 3-4 | new rating: 1488 | ||
| Regional Championships Calgary 2022 (pioneer) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 29 | Roos, Tobias (1871) | Lost 1-2 | -111464 |
| 2pioneer | 75 | Flickinger, Scott (1562) | Won 2-1 | +191483 |
| 3pioneer | 59 | Clarke, Max (1470) | Won 2-1 | +181501 |
| 4pioneer | 42 | Tharmaratnam, Samuel (1808) | Lost 0-2 | -121489 |
| 5pioneer | 61 | Dlugos, Nathan (1500) | Won 2-1 | +181507 |
| 6pioneer | 44 | Cherpillod, Luca (1646) | Lost 0-2 | -161491 |
| 7pioneer | 62 | Kitson, Taylor (1507) | Won 2-1 | +191510 |
| 8pioneer | 49 | Smith, Robert RC (1911) | Lost 0-2 | -111499 |
| top | average opponent: 1659record: 4-4 | new rating: 1499 | ||
| Regional Championships Toronto 2022 (pioneer) | starting rating: 1442 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 160 | Doyle, Eddy (1518) | Lost 0-2 | -161426 |
| 2pioneer | 110 | Lachance, Sebastien (1376) | Won 2-0 | +171443 |
| 3pioneer | 87 | Allen, Kai (1500) | Won 2-1 | +191462 |
| 4pioneer | 64 | Chatel, Zack (1548) | Lost 1-2 | -171445 |
| 5pioneer | 81 | Lamontagne-Caron, Remi (1503) | Won 2-0 | +191464 |
| 6pioneer | 73 | Bird, Graham [CAN] (1512) | Won 2-0 | +191483 |
| 7pioneer | 51 | Payette, Mikael (1589) | Won 2-1 | +201503 |
| 8pioneer | 30 | Ouyang, Bo (1489) | Lost 0-2 | -181485 |
| 9pioneer | 30 | Thibeau, Markus (1944) | Lost 0-2 | -101475 |
| top | average opponent: 1553record: 5-4 | new rating: 1475 | ||
| Grand Prix Montreal 2019 (ELD limited) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 331 | Reid, Dave (1360) | Won 2-0 | +171468 |
| 2sealed | 163 | Koffler, Richard (1536) | Won 2-1 | +191487 |
| 3sealed | 154 | Moore, James [CAN] (1427) | Lost 1-2 | -191468 |
| 4sealed | 145 | Allegrucci, Xavier (1595) | Lost 1-2 | -161452 |
| 5sealed | 250 | Schnayer, Tobias (1938) | Lost 0-2 | -101442 |
| top | average opponent: 1571record: 2-3 | new rating: 1442 | ||
| Grand Prix Toronto 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 316 | Lounsbury, Christopher (1630) | Lost 1-2 | -161484 |
| 3modern | 527 | Peterson, Greg (1550) | Lost 0-2 | -161468 |
| 4modern | 608 | Dunn, Payne (1564) | Lost 0-2 | -171451 |
| top | average opponent: 1581record: 0-3 | new rating: 1451 | ||