Wittenbrink, Stefan
Current rating: 1565
| Grand Prix Munich 2003 (MRD limited) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 251 | Hilty, Frederic (1502) | Lost 0-2 | -171450 |
| 2sealed | 417 | Sader, Andre (1501) | Won 2-1 | +191469 |
| 3sealed | 280 | Christiansen, Claes (1500) | Won 2-0 | +181487 |
| 4sealed | 250 | Miori, Marina (1543) | Won 2-1 | +191506 |
| 5sealed | 211 | Kappeli, Alex (1604) | Lost 0-2 | -161490 |
| 6sealed | 239 | Barwisch, Timo (1534) | Won 2-0 | +191509 |
| 7sealed | 172 | Czicze, Martin (1487) | Won 2-0 | +181527 |
| 8sealed | 78 | Sierocinski, Adam (1597) | Won 2-0 | +191546 |
| 9sealed | 56 | Mitsios, Johannes (1584) | Won 2-1 | +191565 |
| top | average opponent: 1539record: 7-2 | new rating: 1565 | ||
| Grand Prix Genoa 2003 (Onslaught block) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 116 | Dobry, Benjamin (1685) | Lost 0-2 | -151505 |
| 3block | 167 | De Rossi, Marco (1502) | Lost 1-2 | -181487 |
| 4block | 201 | Cossutta, Michele (1387) | Lost 1-2 | -201467 |
| 5block | 235 | Luginbuhl, Thomas (1494) | Won 2-1 | +191486 |
| 6block | 176 | Garnier, Gregory (1465) | Lost 0-2 | -191467 |
| top | average opponent: 1507record: 1-4 | new rating: 1467 | ||
| Grand Prix Heidelberg 2002 (TOR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 62 | Holtz, Jens (1511) | Draw 1-1 | 01500 |
| 3sealed | 146 | Kennel, Matthias (1502) | Won 2-0 | +181518 |
| 4sealed | 105 | Richter, Helge (1538) | Won 2-1 | +191537 |
| 5sealed | 43 | Nahodil, Petr (1627) | Lost 0-2 | -171520 |
| 6sealed | 111 | Brackmann, Aaron (1726) | Won 2-1 | +221542 |
| 7sealed | 63 | Kozachuk, Artem (1327) | Lost 0-2 | -221520 |
| top | average opponent: 1538record: 3-2-1 | new rating: 1520 | ||