Hamilton, Josiah
Current rating: 1552
Record: 19-17
| Regional Championships Atlanta 2023 (pioneer) | starting rating: 1595 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 377 | Eichler, Daniel (1500) | Lost 0-2 | -191576 |
| 2pioneer | 336 | Thanakit, Isara (1476) | Won 2-0 | +161592 |
| 3pioneer | 346 | Jung, Jeremy (1451) | Won 2-0 | +151607 |
| 4pioneer | 226 | Lloyd, Paul (1523) | Lost 0-2 | -191588 |
| 5pioneer | 218 | Johnson, Alex (1710) | Lost 1-2 | -161572 |
| 6pioneer | 409 | Ward, Branden (1489) | Lost 1-2 | -201552 |
| top | average opponent: 1525record: 2-4 | new rating: 1552 | ||
| Regional Championships Dallas 2023 (pioneer) | starting rating: 1556 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 224 | Isaacs, Noah (1511) | Won 2-1 | +171573 |
| 2pioneer | 181 | Green, Edward (1474) | Won 2-0 | +161589 |
| 3pioneer | 31 | Belsky, Aaron (1570) | Won 2-1 | +181607 |
| 4pioneer | 42 | Cubr, Kevin (1638) | Lost 1-2 | -171590 |
| 5pioneer | 170 | Young, Brock (1532) | Won 2-0 | +161606 |
| 6pioneer | 63 | Schreier, Todd (1547) | Won 2-1 | +171623 |
| 7pioneer | 37 | Thornton, Tony (1575) | Won 2-1 | +181641 |
| 8pioneer | 19 | Silver, Jeffrey (1737) | Lost 1-2 | -171624 |
| 9pioneer | 21 | Kim, Irina (1599) | Won 2-1 | +181642 |
| 10pioneer | 28 | Yean, Steven (1617) | Lost 0-2 | -191623 |
| 11pioneer | 50 | Maxson, Gabriel (1848) | Lost 1-2 | -141609 |
| 12pioneer | 80 | Mackenzie, Connor (1830) | Lost 0-2 | -141595 |
| top | average opponent: 1623record: 7-5 | new rating: 1595 | ||
| Regional Championships San Diego 2023 (ONE standard) | starting rating: 1529 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 118 | Shute, Alexander (1510) | Won 2-1 | +171546 |
| 2standard | 123 | Michel, Gregory (1801) | Lost 1-2 | -131533 |
| 3standard | 335 | Moss, Robert (1489) | Lost 0-2 | -191514 |
| 4standard | 328 | Johnson, Brendon (1853) | Lost 0-2 | -121502 |
| 5standard | 372 | Molt, Eric (1447) | Won 2-1 | +171519 |
| 6standard | 305 | Nguyen, Emmett (1533) | Won 2-1 | +181537 |
| 7standard | 182 | Doucet, Jack (1478) | Won 2-1 | +171554 |
| 8standard | 207 | Wong, Daniel (1739) | Won 2-1 | +221576 |
| 9standard | 134 | Cain, Tobias (1482) | Lost 1-2 | -201556 |
| top | average opponent: 1592record: 5-4 | new rating: 1556 | ||
| Regional Championships Atlanta 2022 (pioneer) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 1146 | Blue, Vivienne (1720) | Won 2-1 | +221522 |
| 2pioneer | 1070 | Huffine, Cory (1518) | Won 2-1 | +181540 |
| 3pioneer | 1034 | Schwarz, Jake (1535) | Won 2-1 | +181558 |
| 4pioneer | 1018 | Stensrud, Ethan (1548) | Lost 0-2 | -181540 |
| 5pioneer | 1109 | Pensy, Nicholas (1538) | Won 2-0 | +181558 |
| 6pioneer | 1036 | Carr, Malcolm (1560) | Lost 1-2 | -181540 |
| 7pioneer | 1070 | Gluck, Jacob (1572) | Won 2-1 | +181558 |
| 8pioneer | 1085 | Michel, Gregory (1839) | Lost 1-2 | -131545 |
| 9pioneer | 1115 | Kominowski, Maxx (1635) | Lost 1-2 | -161529 |
| top | average opponent: 1607record: 5-4 | new rating: 1529 | ||