Matthews, Charles
Current rating: 1445
Record: 11-14
| Grand Prix Atlanta 2019 (legacy) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 18 | Kaim, Dillon (1436) | Lost 1-2 | -191463 |
| 2legacy | 367 | Zhang, Zijun (1483) | Won 2-1 | +191482 |
| 3legacy | 262 | Galindo, Cameron (1352) | Lost 1-2 | -211461 |
| 4legacy | 372 | Wysocki, Eric (1547) | Lost 1-2 | -161445 |
| top | average opponent: 1454record: 1-3 | new rating: 1445 | ||
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 326 | Neff, Jonathon (1500) | Lost 0-2 | -181519 |
| 2modern | 400 | Hullum, Shay (1563) | Lost 0-2 | -171502 |
| 3modern | 423 | Svane-Christiansen, Jacob (1437) | Lost 1-2 | -201482 |
| top | average opponent: 1500record: 0-3 | new rating: 1482 | ||
| Grand Prix Charlotte 2016 (modern) | starting rating: 1563 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 728 | O'Keefe, Justin (1500) | Won 2-0 | +161579 |
| 2modern | 358 | Firebaugh, Jeremy (1637) | Won 2-0 | +191598 |
| 3modern | 84 | Celli, Patrick (1410) | Lost 0-2 | -211577 |
| 4modern | 300 | Thiebaut, Donald (1448) | Lost 0-2 | -201557 |
| 5modern | 660 | Kiser, Preston (1483) | Lost 0-2 | -201537 |
| top | average opponent: 1496record: 2-3 | new rating: 1537 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 466 | Brown, Steve (1434) | Lost 1-2 | -191481 |
| 2sealed | 734 | Bengtson, Stephen (1482) | Won 2-0 | +181499 |
| 3sealed | 714 | Coleman, Matt (1481) | Won 2-1 | +171516 |
| 4sealed | 331 | Feng, Michael (1698) | Lost 0-2 | -141502 |
| 5sealed | 729 | Klein, Kyle (1505) | Won 2-0 | +181520 |
| 6sealed | 350 | Wilkerson, Tyler (1540) | Won 2-1 | +181538 |
| 7sealed | 259 | Duval, Anthony (1505) | Won 2-1 | +181556 |
| 8sealed | 251 | Drain, Eric (1657) | Won 2-0 | +191575 |
| 9sealed | 154 | Davis, Eric (1529) | Won 2-1 | +181593 |
| 10draft | 51 | Hobdy, Marcus (1612) | Lost 0-2 | -181575 |
| 11draft | 81 | Basoco, Brian (1661) | Won 2-0 | +191594 |
| 12draft | 78 | Holland, John (1624) | Lost 0-2 | -171577 |
| 13draft | 66 | Lucy, J. Sawyer (1772) | Lost 1-2 | -141563 |
| top | average opponent: 1577record: 8-5 | new rating: 1563 | ||