Newton, John
Current rating: 1400
| Grand Prix Toronto 2010 (SOM limited) | starting rating: 1410 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 53 | Priemer, Tyler (1500) | Won 2-1 | +191429 |
| 2sealed | 34 | Martin, Cory (1518) | Lost 0-2 | -161413 |
| 3sealed | 126 | Wilson, Brendan (1500) | Lost 0-2 | -161397 |
| 4sealed | 236 | Adams, Andrew (1479) | Won 2-0 | +191416 |
| 5sealed | 180 | Anderson, Trevor J (1499) | Lost 0-2 | -161400 |
| top | average opponent: 1499record: 2-3 | new rating: 1400 | ||
| Grand Prix Houston 2002 (extended) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 65 | Arnold, David (1516) | Lost 1-2 | -171464 |
| 2extended | 78 | Parish, Michael (1482) | Lost 0-2 | -181446 |
| 3extended | 99 | March, Devyn (1466) | Lost 0-2 | -181428 |
| 4extended | 124 | King, Steven (1395) | Lost 0-2 | -181410 |
| top | average opponent: 1465record: 0-4 | new rating: 1410 | ||
| Grand Prix Philadelphia 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 174 | Snyder, Gregory (1464) | Won 0-0 | +171517 |
| 2extended | 40 | Coons, Kyle (1500) | Lost 0-0 | -181499 |
| 3extended | 168 | Hirst, Brian (1500) | Lost 0-0 | -181481 |
| top | average opponent: 1488record: 1-2 | new rating: 1481 | ||