Ostermann, Christian
Current rating: 1473
Record: 3-5
| Grand Prix Brussels 2020 (pioneer) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 109 | Tuominen, Tuomas (1733) | Lost 0-2 | -141486 |
| 2pioneer | 454 | Luc, Laurencon (1479) | Won 2-1 | +181504 |
| 3pioneer | 465 | Gadeyne, Kenneth (1390) | Lost 0-2 | -201484 |
| 4pioneer | 610 | Fernandez Ordonez, Ismael (1519) | Lost 0-2 | -171467 |
| 5pioneer | 687 | Signargout, Hippolyte (1724) | Lost 1-2 | -141453 |
| 6pioneer | 616 | Roeterink, Arno (1450) | Won 2-0 | +181471 |
| 7pioneer | 500 | Arneuve, Vladimir (1631) | Lost 1-2 | -151456 |
| 8pioneer | 419 | Guerin, Lydia (1398) | Won 2-0 | +171473 |
| average opponent: 1540record: 3-5 | new rating: 1473 | |||