Korkowski, Joel
Current rating: 1440
Record: 18-22-1
| Grand Prix Seattle 2019 (MH1 limited) | starting rating: 1493 | |||
| round | table | opponent (rating) | result | Δrating |
| A1sealed | 390 | Tsang, Jonathan (1554) | Lost 0-2 | -171476 |
| A2sealed | 624 | Morosoff, Cyrus (1481) | Lost 0-2 | -181458 |
| A3sealed | 456 | Allabarton, Jackson (1417) | Lost 1-2 | -181440 |
| top | average opponent: 1484record: 0-3 | new rating: 1440 | ||
| Grand Prix Portland 2018 (modern) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 199 | Herbosa, Luis (1469) | Won 2-1 | +181506 |
| 2modern | 55 | Lukas, Dustin (1520) | Lost 1-2 | -181488 |
| 3modern | 482 | Casey, Timmy (1499) | Won 2-1 | +181506 |
| 4modern | 381 | Rider, Dominic (1442) | Lost 1-2 | -191487 |
| 5modern | 656 | Johnson, Jonathan (1625) | Won 2-1 | +201507 |
| 6modern | 393 | Gottlieb, Bryan (1721) | Lost 1-2 | -141493 |
| top | average opponent: 1546record: 3-3 | new rating: 1493 | ||
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 220 | Shepardson, Michelle (1481) | Won 2-0 | +171539 |
| 2legacy | 211 | Boissonnault, Ryan (1500) | Lost 0-2 | -191520 |
| 3legacy | 565 | Bauer, David (1812) | Lost 0-2 | -131507 |
| 4legacy | 660 | Riggs, Joseph (1428) | Lost 1-2 | -191488 |
| top | average opponent: 1555record: 1-3 | new rating: 1488 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 217 | Ruiz III, Carlos (1528) | Lost 0-2 | -181484 |
| 2standard | 603 | Lim, Kenny (1482) | Won 2-0 | +181502 |
| 3standard | 573 | Ayers, Corey (1611) | Won 2-1 | +201522 |
| 4standard | 302 | Barnhart, Ryan (1622) | Lost 1-2 | -161506 |
| 5standard | 452 | Mahr, Philip (1384) | Won 2-0 | +161522 |
| 6standard | 299 | Williams, Thomas (1425) | Draw 1-1 | -21520 |
| 7standard | 331 | Schroeder, Jordan (1469) | Won 2-0 | +171537 |
| 8standard | 230 | Chavez, Gilci (1543) | Won 2-0 | +181555 |
| 9standard | 141 | Voykin, Spencer (1579) | Won 2-0 | +181573 |
| 10standard | 94 | Burkey, Jacob (1594) | Lost 1-2 | -171556 |
| 11standard | 154 | Bear, James (1638) | Lost 1-2 | -171539 |
| 12standard | 171 | Im, Hannah (1551) | Lost 1-2 | -171522 |
| top | average opponent: 1536record: 6-5-1 | new rating: 1522 | ||
| Grand Prix Vancouver 2017 (modern) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 2511 | Wright, Andrew [CAN] (1500) | Lost 0-2 | -181501 |
| 2modern | 2476 | Kalk, Cameron (1482) | Won 2-1 | +171518 |
| 3modern | 2598 | Hayward, Connor (1423) | Lost 1-2 | -201498 |
| 4modern | 2579 | Mewis, Keith (1488) | Won 2-1 | +181516 |
| 5modern | 2451 | Lynch, Eric (1420) | Won 2-0 | +171533 |
| 6modern | 2241 | Fontaine, Chris (1608) | Won 2-1 | +191552 |
| 7modern | 2210 | Smith, Isaac (1568) | Lost 1-2 | -181534 |
| 8modern | 2310 | Chreptyk, Brandon (1800) | Lost 0-2 | -131521 |
| 9modern | 2343 | Nomellini, Mike (1447) | Lost 1-2 | -191502 |
| top | average opponent: 1526record: 4-5 | new rating: 1502 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 918 | Louie, Shawn (1498) | Won 2-0 | +181518 |
| 2legacy | 949 | Ongaro, Michael (1625) | Lost 1-2 | -161502 |
| 3legacy | 1231 | Pasqualetti, Joey (1452) | Lost 1-2 | -191483 |
| 4legacy | 1271 | Mcgrath, John (1482) | Won 2-1 | +181501 |
| 5legacy | 905 | Years, Brandon (1500) | Won 2-0 | +181519 |
| 6legacy | 860 | Almanzar, Julio (1518) | Won 2-1 | +181537 |
| 7legacy | 727 | Wheat, Johnathan (1535) | Lost 1-2 | -181519 |
| top | average opponent: 1516record: 4-3 | new rating: 1519 | ||