Ertem, Sinan
Current rating: 1455
Record: 3-6
| Grand Prix London 2018 (RIX limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 76 | Chapman, Matt (1500) | Won 2-0 | +191464 |
| 2sealed | 141 | Grayson, Neil (1619) | Lost 1-2 | -161448 |
| 3sealed | 114 | LoBreglio, Oliver (1502) | Won 2-0 | +191467 |
| 4sealed | 880 | Smith, Andrew8062 (1483) | Won 2-0 | +191486 |
| 5sealed | 273 | Droge, David (1535) | Lost 0-2 | -171469 |
| 6sealed | 413 | Wallner, Johann (1688) | Lost 1-2 | -141455 |
| average opponent: 1555record: 3-3 | new rating: 1455 | |||
| Grand Prix Liverpool 2015 (FRF limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 564 | Lee, Joshua [ENG] (1446) | Lost 0-2 | -191481 |
| 2sealed | 564 | Mehta, Alexander (1482) | Lost 1-2 | -181463 |
| 3sealed | 832 | Hancocks, John (1439) | Lost 0-2 | -181445 |
| average opponent: 1456record: 0-3 | new rating: 1445 | |||