Cox, Jay
Current rating: 1344
Record: 9-20
| Grand Prix Portland 2018 (modern) | starting rating: 1364 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 446 | Zimmerman, Bob (1500) | Lost 1-2 | -161348 |
| 2modern | 557 | Allen, William (1481) | Lost 1-2 | -161332 |
| 3modern | 817 | Chandler, Russell (1490) | Won 2-0 | +211353 |
| 4modern | 602 | Hansen, Nichole (1484) | Lost 1-2 | -151338 |
| 5modern | 684 | Schmitt, Garrett (1467) | Lost 0-2 | -161322 |
| 6modern | 653 | Ikeda, Tatsuya (1484) | Won 2-1 | +211343 |
| 7modern | 512 | Wadsworth, Jared (1301) | Lost 0-2 | -191324 |
| 8modern | 413 | Mclean, Tanner (1445) | Won 2-1 | +201344 |
| top | average opponent: 1457record: 3-5 | new rating: 1344 | ||
| Grand Prix Sacramento 2018 (M19 limited) | starting rating: 1384 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 150 | Lee, Andy (1496) | Won 2-0 | +201404 |
| 2sealed | 42 | Evans, Brandon (1551) | Lost 1-2 | -151389 |
| 3sealed | 399 | Slone, Ryan (1643) | Lost 1-2 | -131376 |
| 4sealed | 512 | Diaz, Nick (1480) | Lost 1-2 | -161360 |
| 5sealed | 487 | Chu, Vincent (1562) | Won 2-1 | +211381 |
| 6sealed | 372 | Bagnall, Justin (1398) | Lost 0-2 | -171364 |
| top | average opponent: 1522record: 2-4 | new rating: 1364 | ||
| Grand Prix Las Vegas 2018 (limited) (DOM limited) | starting rating: 1399 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 163 | Bruner, Christopher (1564) | Lost 0-2 | -151384 |
| top | record: 0-1 | new rating: 1384 | ||
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1450 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 186 | Hibbetts, Dylan (1516) | Lost 1-2 | -171433 |
| 2modern | 703 | Luna, Adam (1483) | Won 2-0 | +191452 |
| 3modern | 838 | Register, Travis (1486) | Lost 1-2 | -171435 |
| 4modern | 787 | Francisco, Larry (1482) | Lost 0-2 | -171418 |
| 5modern | 807 | Kanger, Kristopher (1414) | Lost 0-2 | -191399 |
| top | average opponent: 1476record: 1-4 | new rating: 1399 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 606 | Rhodes, Ethan (1414) | Won 2-0 | +161516 |
| 2standard | 159 | Jackson, Vincent (1548) | Lost 0-2 | -171499 |
| 3standard | 628 | Jacobs, Josh (1518) | Lost 1-2 | -181481 |
| 4standard | 667 | Byun, Chong (1621) | Lost 0-2 | -151466 |
| 5standard | 665 | Reardon, Thomas (1592) | Lost 0-2 | -161450 |
| 6standard | 695 | Liesegang, Thomas (1447) | Won 2-0 | +181468 |
| 7standard | 561 | Briles, Benjamin (1467) | Won 2-0 | +181486 |
| 8standard | 455 | Lee, Benjamin [CAN] (1481) | Lost 0-2 | -181468 |
| 9standard | 406 | Kephart, Joseph (1463) | Lost 1-2 | -181450 |
| top | average opponent: 1506record: 3-6 | new rating: 1450 | ||