Jantzen, Thomas
Current rating: 1529
| Grand Prix Copenhagen 2002 (ONS rochester) | starting rating: 1570 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 21 | Sagebiel, Kalle (1499) | Lost 0-2 | -191551 |
| 2sealed | 195 | Iher, Kaupo (1482) | Lost 0-2 | -191532 |
| 3sealed | 197 | Olsen, Michael (1428) | Won 2-1 | +161548 |
| 4sealed | 215 | Nommensen, Knud (1482) | Lost 0-2 | -191529 |
| top | average opponent: 1473record: 1-3 | new rating: 1529 | ||
| Grand Prix Cologne 2001 (PLS limited) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 78 | Keil, Ottmar (1612) | Lost 1-2 | -171502 |
| 2sealed | 181 | Hohlbein, Lucas (1481) | Won 2-0 | +181520 |
| 3sealed | 202 | Kunzl, Alexander (1500) | Won 2-0 | +181538 |
| 4sealed | 105 | Lodowicks, Arnd (1482) | Won 1-0 | +171555 |
| 5sealed | 51 | Vestergaard, Jakob (1486) | Won 2-0 | +161571 |
| 6sealed | 39 | Sejdiu, Demir (1530) | Won 2-0 | +181589 |
| 7sealed | 24 | Loos, Sebastian (1557) | Draw 1-1 | -11588 |
| 8sealed | 26 | Muller, Andre (1596) | Lost 1-2 | -181570 |
| top | average opponent: 1531record: 5-2-1 | new rating: 1570 | ||
| Grand Prix Copenhagen 2000 (PCY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 89 | Dang, Martin (1500) | Won 1-0 | +181518 |
| 2sealed | 75 | Fries, Stefan (1484) | Lost 0-2 | -191499 |
| 3sealed | 90 | Rommelhoff, Johannes (1447) | Won 2-1 | +171516 |
| 4sealed | 64 | Magnusson, Mikael (1566) | Lost 1-2 | -171499 |
| 5sealed | 133 | Bouchaib, Messaoud (1543) | Lost 0-2 | -171482 |
| 6sealed | 128 | Van Hemelryck, Eric (1483) | Won 2-1 | +181500 |
| 7sealed | 98 | Kronander, Joel (1532) | Won 2-0 | +191519 |
| top | average opponent: 1508record: 4-3 | new rating: 1519 | ||