Harrison, Dave
Current rating: 1399
| Grand Prix Toronto 2016 (SOI standard) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 434 | Hill, David (1654) | Lost 0-2 | -141415 |
| 2standard | 400 | Hamasoor, Delan (1482) | Lost 0-2 | -161399 |
| top | average opponent: 1568record: 0-2 | new rating: 1399 | ||
| Grand Prix London 2002 (Odyssey block) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 97 | Lynch, Chris J (1446) | Lost 0-2 | -181428 |
| 2block | 213 | Vivier, Guihard (1482) | Lost 1-2 | -171411 |
| 3block | 285 | Manwaring, Bill (1431) | Won 2-0 | +181429 |
| top | average opponent: 1453record: 1-2 | new rating: 1429 | ||
| Grand Prix London 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 40 | Lindley, Jonathan (1500) | Lost 0-2 | -181482 |
| 2block | 199 | Larner, James (1485) | Lost 0-2 | -181464 |
| 3block | 204 | Cornelius, Stephen (1465) | Lost 0-2 | -181446 |
| top | average opponent: 1483record: 0-3 | new rating: 1446 | ||