Jacox, Sean
Current rating: 1503
Record: 20-21
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 449 | Bredthauer, Al (1500) | Won 2-1 | +181516 |
| 2legacy | 293 | Aba, Christopher (1464) | Won 2-0 | +171533 |
| 3legacy | 220 | Cobb, Axel (1512) | Lost 1-2 | -181515 |
| 4legacy | 386 | Krenz, Josh (1537) | Won 2-0 | +181533 |
| 5legacy | 279 | Kopp, Patrick (1836) | Lost 1-2 | -121521 |
| 6legacy | 401 | South, Tyler (1561) | Lost 1-2 | -181503 |
| top | average opponent: 1568record: 3-3 | new rating: 1503 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 357 | Bradley, James (1441) | Lost 1-2 | -191521 |
| 2standard | 513 | Fancy, Rachel (1441) | Lost 1-2 | -201501 |
| 3standard | 758 | Sherpa, Nathaniel (1467) | Won 2-0 | +181519 |
| 4standard | 721 | Campbell, Matthew (1396) | Lost 0-2 | -211498 |
| top | average opponent: 1436record: 1-3 | new rating: 1498 | ||
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1547 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 883 | Arias, Jaycob (1500) | Lost 1-2 | -191528 |
| 2modern | 953 | Lujan, Gerald (1484) | Won 2-0 | +171545 |
| 3modern | 1190 | Valadez, Frederick (1501) | Won 2-0 | +171562 |
| 4modern | 637 | Dejesus, Adam (1514) | Lost 0-2 | -191543 |
| 5modern | 900 | Harrison, Jeffrey (1499) | Lost 0-2 | -181525 |
| 6modern | 1061 | Hodges, Robert (1414) | Won 2-0 | +161541 |
| 7modern | 963 | Ma, Jesse (1578) | Won 2-1 | +181559 |
| 8modern | 567 | Perin, Max (1513) | Lost 0-2 | -191540 |
| top | average opponent: 1500record: 4-4 | new rating: 1540 | ||
| Grand Prix Las Vegas 2017 (legacy) (legacy) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 171 | Jusenius, Michael (1430) | Won 2-0 | +181488 |
| 2legacy | 2120 | Zuniga, Michael (1506) | Won 2-1 | +181506 |
| 3legacy | 195 | Jones, Kevin (2001) | Won 2-0 | +261532 |
| 4legacy | 46 | Yu, Jarvis (1971) | Lost 0-2 | -101522 |
| 5legacy | 433 | Kroeger, Barrett (1519) | Won 2-0 | +181540 |
| 6legacy | 212 | Harmon, Lawrence (1740) | Lost 0-2 | -151525 |
| 7legacy | 325 | Quinn, Ryan (1446) | Won 2-1 | +171542 |
| 8legacy | 268 | Dao, Anh (1606) | Lost 0-2 | -171525 |
| 9legacy | 481 | Miller, Kyle6751 (1537) | Won 2-0 | +181543 |
| 10legacy | 274 | Clark, Daniel (1634) | Won 2-1 | +201563 |
| 11legacy | 136 | Edgar, Michael (1658) | Lost 0-2 | -161547 |
| top | average opponent: 1641record: 7-4 | new rating: 1547 | ||
| Grand Prix Portland 2016 (EMN standard) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 69 | Guadron, Tony (1500) | Lost 0-2 | -181470 |
| 2standard | 486 | Paul, Robyn (1483) | Won 2-1 | +181488 |
| 3standard | 416 | Geisler, Keegan (1501) | Lost 1-2 | -171471 |
| 4standard | 637 | Manwaring-Perks, Jackson (1484) | Won 2-1 | +181489 |
| 5standard | 384 | Gibson, Justice (1473) | Lost 0-2 | -191470 |
| top | average opponent: 1488record: 2-3 | new rating: 1470 | ||
| Grand Prix Seattle-Tacoma 2015 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 272 | Duterte, Daniel (1644) | Lost 0-2 | -151485 |
| 2legacy | 682 | Thompson, Tristan (1486) | Lost 0-2 | -181467 |
| 3legacy | 907 | Bolick, Robbie (1692) | Lost 1-2 | -141453 |
| 4legacy | 882 | Kissler, Cris (1428) | Won 2-0 | +171470 |
| 5legacy | 768 | Rosier, Keith (1467) | Won 2-0 | +181488 |
| 6legacy | 683 | He, Tony (1517) | Won 2-0 | +191507 |
| 7legacy | 458 | Agra, Robert (1459) | Lost 1-2 | -191488 |
| top | average opponent: 1528record: 3-4 | new rating: 1488 | ||