Okkerstrom, Claus
Current rating: 1443
| Grand Prix Utrecht 2019 (ELD limited) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 602 | Rotelli, Francesco (1593) | Won 2-1 | +201475 |
| 2sealed | 257 | Mohr, Lars (1554) | Lost 0-2 | -161459 |
| 3sealed | 580 | Franco, Joao (1519) | Lost 0-2 | -171442 |
| 4sealed | 588 | Hartmann, Robert (1363) | Won 2-1 | +171459 |
| 5sealed | 462 | Johnson, Sven (1595) | Lost 1-2 | -161443 |
| top | average opponent: 1525record: 2-3 | new rating: 1443 | ||
| Grand Prix Copenhagen 2019 (MH1 limited) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 55 | Haflidason, Tomas (1500) | Lost 1-2 | -181492 |
| 2sealed | 394 | Aateigen, Simen Straume (1477) | Lost 0-2 | -191473 |
| 3sealed | 613 | Volker, Jan (1452) | Lost 0-2 | -181455 |
| top | average opponent: 1476record: 0-3 | new rating: 1455 | ||
| Grand Prix London 2018 (RIX limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 170 | Wdowiak, Witold (1500) | Lost 1-2 | -181482 |
| 2sealed | 621 | Ziska, Bergur (1464) | Lost 1-2 | -181464 |
| 3sealed | 914 | Johns, Darryl (1543) | Won 2-1 | +191483 |
| 4sealed | 729 | Alcantara, Jomar (1430) | Won 2-1 | +171500 |
| 5sealed | 662 | Burnand, Dan (1878) | Won 2-0 | +251525 |
| 6sealed | 457 | Helbig, Martin (1698) | Lost 1-2 | -151510 |
| top | average opponent: 1585record: 3-3 | new rating: 1510 | ||