Stupka, Roman
Current rating: 1450
Record: 4-8
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1436 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 95 | Arabi-Eter, Samir (1515) | Lost 1-2 | -171419 |
| 2standard | 455 | Langer, Tomas (1721) | Lost 1-2 | -121407 |
| 3standard | 705 | Bauer, Frantisek (1464) | Won 2-0 | +191426 |
| 4standard | 607 | Fiedler, Sebastian (1479) | Won 2-0 | +191445 |
| 5standard | 493 | Heigerer, Stefan (1653) | Won 2-1 | +211466 |
| 6standard | 428 | Muller, Dirk (1533) | Lost 1-2 | -161450 |
| average opponent: 1561record: 3-3 | new rating: 1450 | |||
| Grand Prix Warsaw 2013 (M14 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 85 | Berger, Natalia (1554) | Lost 1-2 | -171483 |
| 5standard | 185 | Karpov, Pavel (1484) | Lost 0-2 | -181465 |
| 6standard | 200 | Martinho, Pedro (1588) | Won 2-1 | +201485 |
| 7standard | 136 | Huber, Gabriel (1528) | Lost 0-2 | -171468 |
| 8standard | 273 | Baldus, Michael (1644) | Lost 1-2 | -151453 |
| 9standard | 278 | Castillo, Roberto (1483) | Lost 1-2 | -171436 |
| average opponent: 1547record: 1-5 | new rating: 1436 | |||