Tollefsen, Jonas
Current rating: 1522
Record: 4-3-3
| Grand Prix Copenhagen 2002 (ONS rochester) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 93 | Buchanan, Andrew (1572) | Draw 1-1 | +11505 |
| 2sealed | 123 | Wyrostek, Robert (1386) | Draw 1-1 | -21503 |
| 3sealed | 179 | Kristensen, Dennis (1566) | Won 2-0 | +191522 |
| 4sealed | 157 | Hagen-Goldsworthy, Oliver (1516) | Won 2-0 | +181540 |
| 5sealed | 108 | Rasmussen, Anders (1540) | Lost 1-2 | -181522 |
| average opponent: 1516record: 2-1-2 | new rating: 1522 | |||
| Grand Prix Oslo 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 57 | Smestad, Kjetil (1500) | Won 2-0 | +181518 |
| 2block | 44 | Krogstad, Lars Oystein (1471) | Draw 1-1 | -11517 |
| 3block | 43 | Bakke, Arne Gunnar (1504) | Won 2-1 | +181535 |
| 4block | 36 | Backfjard, Johan (1538) | Lost 0-2 | -181517 |
| 5block | 61 | Rosholm, Thomas (1794) | Lost 0-2 | -131504 |
| average opponent: 1561record: 2-2-1 | new rating: 1504 | |||