Howell, David
Current rating: 1460
Record: 4-6
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 30 | Linscott, Megan (1404) | Won 2-1 | +161515 |
| 2modern | 118 | Ekendahl, Frans (1477) | Lost 0-2 | -191496 |
| 3modern | 418 | Samson, Roger (1553) | Lost 1-2 | -171479 |
| 4modern | 403 | Jacquet, Christophe (1427) | Lost 0-2 | -191460 |
| average opponent: 1465record: 1-3 | new rating: 1460 | |||
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 290 | Crowley, Michael (1483) | Won 2-0 | +181518 |
| 2sealed | 261 | Korb, William (1518) | Lost 1-2 | -181500 |
| 3sealed | 626 | Evans, Christopher (1482) | Lost 1-2 | -191481 |
| 4sealed | 758 | Mielbye, Ryan (1483) | Won 2-0 | +181499 |
| 5sealed | 463 | McGuire, Christopher (1467) | Won 2-1 | +181517 |
| 6sealed | 507 | Heppding, Nick (1502) | Lost 0-2 | -181499 |
| average opponent: 1489record: 3-3 | new rating: 1499 | |||