Yourchek, Sean
Current rating: 1528
Record: 15-16-1
| Grand Prix London 2018 (RIX limited) | starting rating: 1440 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 59 | Benson, Avi (1500) | Won 2-0 | +201460 |
| 2sealed | 394 | Holmes, Greg (1633) | Won 2-0 | +211481 |
| 3sealed | 443 | Burello, Nicholas (1506) | Lost 1-2 | -181463 |
| 4sealed | 601 | Campbell, Gary (1385) | Won 2-0 | +171480 |
| 5sealed | 290 | Chua, Zong En (1583) | Won 2-1 | +201500 |
| 6sealed | 213 | Skornik, Denis (1745) | Won 2-1 | +221522 |
| 7sealed | 44 | Ganz, Andreas (1912) | Lost 0-2 | -111511 |
| 8sealed | 154 | Griffiths, Pip (1766) | Won 2-1 | +221533 |
| 9sealed | 198 | Sele, Yves (1924) | Lost 1-2 | -111522 |
| 10draft | 131 | Royde, Daniel (1644) | Won 2-1 | +201542 |
| 11draft | 156 | Daubasse, Ludovic (1551) | Won 2-1 | +181560 |
| 12draft | 187 | Santos, Pedro (1595) | Lost 0-2 | -171543 |
| 13draft | 36 | Saval Marhuenda, Alberto (1705) | Lost 1-2 | -151528 |
| top | average opponent: 1650record: 8-5 | new rating: 1528 | ||
| Grand Prix Vancouver 2017 (modern) | starting rating: 1471 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 2288 | Hogg, Owen (1499) | Won 2-0 | +181489 |
| 2modern | 2207 | Tieu, Justin (1597) | Lost 0-2 | -161473 |
| 3modern | 2460 | Warkotsch, Luke (1467) | Won 2-1 | +181491 |
| 4modern | 2303 | Pareja, Daniel (1563) | Lost 1-2 | -171474 |
| 5modern | 2394 | Chin, Gavin (1484) | Lost 1-2 | -181456 |
| 6modern | 2595 | Carr, Colin (1568) | Lost 0-2 | -161440 |
| top | average opponent: 1530record: 2-4 | new rating: 1440 | ||
| Grand Prix Vancouver 2016 (OGW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 411 | Fisher, Elliot (1506) | Lost 0-2 | -181482 |
| 2sealed | 655 | Egashira, Kenji (1883) | Won 2-0 | +251507 |
| 3sealed | 514 | Denton, Noah (1499) | Lost 0-0 | -181489 |
| 4sealed | 728 | Hall, Daniel [CAN] (1483) | Lost 0-2 | -181471 |
| top | average opponent: 1593record: 1-3 | new rating: 1471 | ||
| Grand Prix Vancouver 2014 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 412 | Abrahim, Adam (1500) | Draw 1-1 | 01500 |
| 2standard | 248 | Auchterlonie, Yvan (1500) | Won 2-0 | +181518 |
| 3standard | 175 | Lam, Joseph (1504) | Lost 1-2 | -181500 |
| 4standard | 306 | Briginshaw, Richard (1500) | Lost 1-2 | -181482 |
| 5standard | 372 | Farrington, Tyler (1483) | Lost 1-2 | -181464 |
| 6standard | 349 | Carter, Jack (1463) | Won 2-1 | +181482 |
| 7standard | 266 | Naka, Timothy (1481) | Won 2-0 | +181500 |
| 8standard | 198 | Germaix, Gabriel (1498) | Won 2-1 | +181518 |
| 9standard | 150 | Primrose, George (1518) | Lost 0-2 | -181500 |
| top | average opponent: 1494record: 4-4-1 | new rating: 1500 | ||