Herrera Prehn, Sebasti
Current rating: 1572
| Grand Prix Gothenburg 2013 (DGM limited) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 16 | Westermann, Soren (1466) | Won 2-0 | +171556 |
| 2sealed | 48 | Espensen, Espen (1480) | Lost 1-2 | -201536 |
| 3sealed | 165 | Jelecevic, Jan (1628) | Won 2-1 | +201556 |
| 4sealed | 180 | Myhre, Even (1518) | Won 2-0 | +171573 |
| 5sealed | 144 | Karslon, David (1536) | Won 2-0 | +181591 |
| 6sealed | 119 | Mathiasson, Mikael (1565) | Lost 0-2 | -191572 |
| 7sealed | 175 | Wilks, John-Joseph (1572) | Won 2-1 | +181590 |
| 8sealed | 140 | Aursand, Preben (1562) | Lost 0-2 | -181572 |
| top | average opponent: 1541record: 5-3 | new rating: 1572 | ||
| Grand Prix Malmo 2012 (AVR limited) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 52 | Facchini, Nullo (1534) | Draw 1-1 | 01523 |
| 2sealed | 109 | Wellman, Fredrik (1497) | Draw 1-1 | 01523 |
| 3sealed | 161 | Brzozowski, Pawel (1570) | Lost 1-2 | -171506 |
| 4sealed | 204 | Shepherd, Iain (1390) | Won 2-1 | +151521 |
| 5sealed | 173 | Friemann, Peter (1500) | Won 2-0 | +181539 |
| top | average opponent: 1498record: 2-1-2 | new rating: 1539 | ||
| Grand Prix Copenhagen 2008 (EVE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 27 | Hromadka, Petr (1500) | Won 2-1 | +181518 |
| 2standard | 119 | Strom, Tobias (1607) | Lost 1-2 | -161502 |
| 3standard | 174 | Picciafuochi, Riccardo (1519) | Lost 1-2 | -181484 |
| 4standard | 237 | Guldborg, Dan (1484) | Lost 1-2 | -181466 |
| 5standard | 264 | Junker, Rune (1465) | Won 2-0 | +181484 |
| 6standard | 194 | Sorensen, Jakob (1480) | Won 2-1 | +181502 |
| 7standard | 177 | Panum, Thomas K (1500) | Won 2-1 | +181520 |
| 8standard | 115 | Vilain, Arnaud (1693) | Won 2-0 | +211541 |
| 9standard | 101 | Andersson, Johannes (1543) | Lost 0-2 | -181523 |
| top | average opponent: 1532record: 5-4 | new rating: 1523 | ||