Jacobsen, Gray
Current rating: 1496
Record: 13-17
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 62 | Ward, Dillon (1501) | Won 2-1 | +181501 |
| 4modern | 24 | Baker, Justin (1752) | Won 2-1 | +231524 |
| 5modern | 18 | Orange, Gregory (1934) | Lost 1-2 | -111513 |
| 6modern | 54 | Farrell, Bret (1627) | Lost 0-2 | -161497 |
| 7modern | 134 | Gilreath, Dalton (1531) | Lost 0-2 | -171480 |
| 8modern | 145 | Diaz, Oscar (1407) | Won 2-0 | +161496 |
| top | average opponent: 1625record: 3-3 | new rating: 1496 | ||
| Grand Prix Atlanta 2018 (modern) | starting rating: 1425 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 259 | Henson, Hakeem (1598) | Won 2-1 | +211446 |
| 4modern | 26 | Householder, Nicholas (1565) | Won 2-0 | +201466 |
| 5modern | 100 | Lim, Zhong Yi (1889) | Lost 1-2 | -101456 |
| 6modern | 188 | Nelson, Kyle (1613) | Won 2-1 | +211477 |
| 7modern | 90 | Killelea, Thomas (1540) | Lost 0-2 | -171460 |
| 8modern | 183 | Macy, Kyle (1512) | Won 2-1 | +191479 |
| 9modern | 133 | Girardot, John (1523) | Won 2-1 | +191498 |
| 10modern | 76 | Brooks, Nick (1627) | Won 2-1 | +201518 |
| 11modern | 55 | Pereira, Otavio (1656) | Lost 0-2 | -161502 |
| 12modern | 92 | Nelson, Brad (2133) | Lost 0-2 | -71495 |
| 13modern | 76 | Lucy, J. Sawyer (1871) | Lost 1-2 | -121483 |
| top | average opponent: 1684record: 6-5 | new rating: 1483 | ||
| Grand Prix Richmond 2017 (AKH limited) | starting rating: 1454 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 49 | Bastin, Benjamin (1554) | Lost 0-2 | -161438 |
| 4sealed | 507 | Donaldson, Mark (1645) | Lost 0-2 | -151423 |
| 5sealed | 534 | Pierce, Bryen (1449) | Lost 1-2 | -171406 |
| 6sealed | 570 | Francis, Stephen (1484) | Won 2-0 | +191425 |
| top | average opponent: 1533record: 1-3 | new rating: 1425 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 221 | Meissner, William (1482) | Won 2-0 | +181482 |
| 2sealed | 426 | Smith, Donald (1983) | Lost 1-2 | -91473 |
| 3sealed | 738 | Paynic, Anthony (1511) | Won 2-1 | +181491 |
| 4sealed | 257 | Chacon, Juan (1520) | Lost 1-2 | -171474 |
| 5sealed | 625 | King, James (1364) | Lost 1-2 | -201454 |
| top | average opponent: 1572record: 2-3 | new rating: 1454 | ||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1465 | Richards, Adam D (1500) | Won 2-0 | +181518 |
| 2modern | 1411 | Parker, Cory (1558) | Lost 0-2 | -171501 |
| 3modern | 1572 | Westman, Clay (1451) | Lost 1-2 | -191482 |
| 4modern | 1625 | Duran, Raul (1481) | Lost 1-2 | -181464 |
| top | average opponent: 1498record: 1-3 | new rating: 1464 | ||