Piwiec, Arkadiusz
Current rating: 1456
Record: 5-8-2
| Grand Prix Warsaw 2013 (M14 standard) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 123 | Kozak, Kuba (1518) | Draw 1-1 | 01489 |
| 3standard | 206 | Perez, Joaquin (1561) | Won 2-1 | +201509 |
| 4standard | 188 | Stabel, Martin (1542) | Draw 1-1 | 01509 |
| 5standard | 269 | Maroti, Andras (1535) | Lost 0-2 | -171492 |
| 6standard | 338 | Jankowski, Arno (1512) | Lost 1-2 | -181474 |
| 7standard | 167 | Mehlsack, Markus (1468) | Lost 0-2 | -181456 |
| average opponent: 1523record: 1-3-2 | new rating: 1456 | |||
| Grand Prix London 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 603 | Webster, Ross (1482) | Won 2-0 | +181518 |
| 2sealed | 112 | Warnock, Alan (1674) | Lost 0-2 | -151503 |
| 3sealed | 627 | Gyhagen, Mikael (1505) | Lost 1-2 | -181485 |
| 4sealed | 652 | Telford, Alex (1478) | Lost 1-2 | -191466 |
| 5sealed | 801 | Rodrigues Semensati, Eduardo (1487) | Won 2-0 | +191485 |
| 6sealed | 660 | Djogouros, Michalis (1489) | Lost 1-2 | -181467 |
| 7sealed | 609 | Stocking, Christopher (1573) | Won 2-1 | +201487 |
| 8sealed | 443 | Carbajo Lopez, Daniel (1510) | Won 2-0 | +181505 |
| 9sealed | 328 | Kuntze, Maximilian (1588) | Lost 0-2 | -161489 |
| average opponent: 1532record: 4-5 | new rating: 1489 | |||