Osterfeld, Thomas
Current rating: 1553
Record: 9-6
| Grand Prix London 2013 (GTC limited) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 227 | Calovini, Lukas (1541) | Lost 0-2 | -181519 |
| 2sealed | 505 | Hansen, Michael Bagge (1482) | Lost 0-2 | -191500 |
| 3sealed | 801 | Pero, Yiannis (1467) | Won 2-1 | +181518 |
| 4sealed | 667 | Rohland, Lukas (1656) | Lost 0-2 | -161502 |
| 5sealed | 749 | Bloundele, Zack (1465) | Won 2-1 | +171519 |
| 6sealed | 671 | Poldsam, Ismo (1511) | Won 2-0 | +181537 |
| 7sealed | 443 | Fermani, Marco (1494) | Lost 0-2 | -191518 |
| 8sealed | 486 | Backeman, Daniel (1496) | Won 2-0 | +181536 |
| 9sealed | 316 | Moate, Matthew (1499) | Won 2-0 | +171553 |
| average opponent: 1512record: 5-4 | new rating: 1553 | |||
| Grand Prix Lisbon 2012 (RTR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 584 | Wolder, Claus Bo (1431) | Won 2-0 | +171517 |
| 2sealed | 522 | Hay, Christopher (1614) | Lost 0-2 | -161501 |
| 3sealed | 731 | Pires, Pedro (1458) | Won 2-1 | +171518 |
| 4sealed | 663 | Martins, Paulo (1520) | Won 2-1 | +181536 |
| 5sealed | 632 | Le Bot, Philippe (1683) | Won 2-1 | +201556 |
| 6sealed | 529 | Lucas, Gertjan (1465) | Lost 1-2 | -191537 |
| average opponent: 1528record: 4-2 | new rating: 1537 | |||