Bertelsen, Claus
Current rating: 1462
| Grand Prix Copenhagen 2019 (MH1 limited) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 201 | Runander, Khan (1525) | Lost 0-2 | -171474 |
| 2sealed | 464 | Davis-Purcell, Ben (1530) | Won 2-0 | +191493 |
| 3sealed | 373 | Mygh, Sebastian (1801) | Lost 0-2 | -131480 |
| 4sealed | 452 | Lyster, Kjertan (1487) | Lost 0-2 | -181462 |
| top | average opponent: 1586record: 1-3 | new rating: 1462 | ||
| Grand Prix Copenhagen 2017 (modern) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 418 | Routasaari, Toni (1500) | Won 2-1 | +181500 |
| 2modern | 151 | Henriksen, Thor (1576) | Won 2-1 | +191519 |
| 3modern | 99 | Spencer, Kristian (1500) | Won 2-1 | +181537 |
| 4modern | 212 | Valkeapaa, Tuomas (1616) | Lost 0-2 | -171520 |
| 5modern | 278 | Wulf, Jesper (1749) | Won 2-0 | +231543 |
| 6modern | 236 | Navarro, Diego (1472) | Lost 1-2 | -201523 |
| 7modern | 308 | Aunon Lorefice, Federico Antonio (1537) | Draw 1-1 | +11524 |
| 8modern | 297 | Malling, Oliver (1535) | Won 2-1 | +181542 |
| 9modern | 190 | Tzamouranis, Chronis (1529) | Won 2-1 | +171559 |
| 10modern | 367 | Elmblad, Joakim (1531) | Lost 1-2 | -181541 |
| 11modern | 436 | Valerio, Lisci (1558) | Lost 1-2 | -181523 |
| 12modern | 461 | Brans, Kasper (1624) | Lost 1-2 | -161507 |
| 13modern | 458 | Rieke, Konstantin (1625) | Lost 1-2 | -161491 |
| top | average opponent: 1566record: 6-6-1 | new rating: 1491 | ||
| Grand Prix Copenhagen 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 340 | Croze, Christopher (1500) | Won 2-1 | +181518 |
| 2modern | 220 | Schuette, Soeren (1525) | Lost 1-2 | -181500 |
| 3modern | 505 | Kaihoj, Jonathan (1465) | Lost 0-2 | -191481 |
| 4modern | 524 | Jinnestrand, Martin (1458) | Lost 1-2 | -181463 |
| 5modern | 556 | Jessen, Emil (1495) | Won 2-0 | +191482 |
| top | average opponent: 1489record: 2-3 | new rating: 1482 | ||