Van Os, Martin
Current rating: 1429
Record: 5-10
| Grand Prix Montreal 2014 (BNG limited) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 171 | Darlow, Kyle (1500) | Lost 1-2 | -161413 |
| 2sealed | 550 | Boulanger, Vincent (1636) | Lost 0-2 | -141399 |
| 3sealed | 662 | Keays, Jason (1464) | Lost 1-2 | -171382 |
| 4sealed | 664 | Lallier, Oscar (1445) | Won 2-1 | +191401 |
| 5sealed | 581 | Maltais, Pierre-Louis (1467) | Won 2-1 | +191420 |
| 6sealed | 414 | Vannelli, Lucas (1483) | Lost 0-2 | -171403 |
| 7sealed | 365 | Cormier, Francis (1711) | Won 2-0 | +241427 |
| 8sealed | 280 | Hirmiz, Fadi (1461) | Won 2-0 | +181445 |
| 9sealed | 204 | Miniati, Christian (1503) | Lost 1-2 | -161429 |
| average opponent: 1519record: 4-5 | new rating: 1429 | |||
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 308 | Ghotbi, Aidin (1500) | Lost 0-2 | -181482 |
| 2sealed | 525 | Turek, Chris (1482) | Lost 0-2 | -181464 |
| 3sealed | 656 | Boutin, Nathaniel (1551) | Lost 0-2 | -161448 |
| 4sealed | 680 | Campbell, Mary (1446) | Won 2-1 | +181466 |
| 5sealed | 589 | Jeanson, Hayden (1464) | Lost 1-2 | -181448 |
| 6sealed | 64 | Hurst, Christopher (1444) | Lost 0-2 | -191429 |
| average opponent: 1481record: 1-5 | new rating: 1429 | |||