Vollman, Joshua
Current rating: 1536
Record: 16-16-1
| Grand Prix Oakland 2019 (modern) | starting rating: 1531 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 238 | Semerau, Brandon (1834) | Won 2-0 | +241555 |
| 3modern | 152 | Young, Michael M (1642) | Won 2-0 | +191574 |
| 4modern | 9 | Zuravleff, Adam (1561) | Lost 1-2 | -181556 |
| 5modern | 171 | Hubbard, Jay (1540) | Lost 1-2 | -181538 |
| 6modern | 309 | Griffin, Kyle (1434) | Won 2-0 | +161554 |
| 7modern | 102 | Romero, Guillermo (1562) | Lost 1-2 | -181536 |
| top | average opponent: 1596record: 3-3 | new rating: 1536 | ||
| Grand Prix Sacramento 2018 (M19 limited) | starting rating: 1571 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 331 | Groat, Josh (1590) | Lost 0-2 | -181553 |
| 2sealed | 420 | Miller, Max (1442) | Lost 1-2 | -201533 |
| 3sealed | 515 | Eden, Aaron (1359) | Won 2-0 | +151548 |
| 4sealed | 409 | Kingston, Kenner (1480) | Won 2-0 | +171565 |
| 5sealed | 424 | Nelson, Evan (1776) | Lost 0-2 | -141551 |
| 6sealed | 386 | Jiang, Rui (1481) | Lost 0-2 | -201531 |
| top | average opponent: 1521record: 2-4 | new rating: 1531 | ||
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 607 | Menesini, Gregory (1406) | Won 2-1 | +171505 |
| 2modern | 494 | Kurtz, Luke (1518) | Won 2-0 | +181523 |
| 3modern | 402 | McCord, Kristopher (1705) | Won 2-0 | +211544 |
| 4modern | 25 | Davis, Peter (1595) | Lost 1-2 | -171527 |
| 5modern | 245 | Kim, Jeremy (1850) | Won 2-1 | +241551 |
| 6modern | 298 | Wolloch, Sam (1650) | Lost 1-2 | -171534 |
| 7modern | 377 | DeVoll, Harrison (1463) | Won 2-0 | +171551 |
| 8modern | 178 | Baumgarten, Joseph (1612) | Won 2-1 | +191570 |
| 9modern | 5141 | Rojo, Jonathan (1665) | Won 2-1 | +201590 |
| 10modern | 5067 | Zafra, Marcel Angelo (1810) | Won 2-0 | +221612 |
| 11modern | 5045 | Gotfredsen, Anders (1821) | Lost 0-2 | -141598 |
| 12modern | 5102 | Maeder, Michael (1829) | Won 2-0 | +221620 |
| 13modern | 5055 | Gay, Nathan (1758) | Lost 1-2 | -161604 |
| 14modern | 5109 | Goddard, Maxwell (1785) | Lost 1-2 | -141590 |
| 15modern | 5107 | Walker, Nicholas (1544) | Lost 0-2 | -191571 |
| top | average opponent: 1667record: 9-6 | new rating: 1571 | ||
| Grand Prix San Jose 2017 (AER limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 494 | Barreto, Max (1500) | Won 2-0 | +181518 |
| 2sealed | 126 | Yaman, Robert (1773) | Lost 0-2 | -131505 |
| 3sealed | 566 | Scheffler, Andy (1504) | Won 2-1 | +181523 |
| 4sealed | 384 | Yee, Peter (1502) | Draw 1-1 | -11522 |
| 5sealed | 397 | Reasor, Ian (1628) | Lost 0-2 | -161506 |
| 6sealed | 536 | Reimers, Liam (1502) | Lost 0-2 | -181488 |
| top | average opponent: 1568record: 2-3-1 | new rating: 1488 | ||