Bielert, Olaf A
Current rating: 1470
Record: 2-4
| Grand Prix Rotterdam 2009 (CON limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 139 | Wauters, Tom (1516) | Won 2-1 | +181518 |
| 2sealed | 149 | Jessen, Johannes (1540) | Lost 0-2 | -171501 |
| 3sealed | 103 | Perez Paez, Oscar (1610) | Won 2-0 | +201521 |
| 4sealed | 103 | Goertzen, Simon (1805) | Lost 0-2 | -131508 |
| 5sealed | 210 | Li, Dennis (1417) | Lost 1-2 | -201488 |
| 6sealed | 193 | Colombi, Giovanni (1482) | Lost 0-2 | -181470 |
| average opponent: 1562record: 2-4 | new rating: 1470 | |||