Ng, John
Current rating: 1428
Record: 1-5-1
| Grand Prix Rotterdam 2009 (CON limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 579 | Londos, Ludvig (1536) | Lost 0-2 | -161429 |
| 2sealed | 653 | Lelieveld, Igor (1482) | Draw 1-1 | +11430 |
| 3sealed | 639 | Brinks, Eric (1314) | Won 2-1 | +161446 |
| 4sealed | 600 | Graefling, Beat (1427) | Lost 0-2 | -181428 |
| average opponent: 1440record: 1-2-1 | new rating: 1428 | |||
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 45 | Healey, Timothy (1464) | Lost 0-2 | -191481 |
| 2extended | 398 | Loman, Anthony (1482) | Lost 0-2 | -181463 |
| 3extended | 432 | Renger, Tom (1464) | Lost 0-1 | -181445 |
| average opponent: 1470record: 0-3 | new rating: 1445 | |||