Mathena, David
Current rating: 1465
Record: 3-5
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 194 | Johnson, Vincent (1666) | Lost 0-2 | -151485 |
| 2modern | 384 | Whittington, David (1469) | Lost 0-2 | -181467 |
| 3modern | 447 | Vogt, Daniel (1402) | Lost 0-2 | -191448 |
| 4modern | 452 | Worley, Matthew (1352) | Lost 1-2 | -201428 |
| 5modern | 402 | Barnett, Riley (1425) | Won 2-0 | +181446 |
| 6modern | 331 | Svane-Christiansen, Jacob (1420) | Won 2-1 | +171463 |
| 7modern | 258 | Estomba, Charles (1581) | Lost 1-2 | -161447 |
| 8modern | 221 | Messick, Gavin (1431) | Won 2-0 | +181465 |
| average opponent: 1468record: 3-5 | new rating: 1465 | |||