Osterberg, William
Current rating: 1385
| Grand Prix Stockholm 2018 (modern) | starting rating: 1360 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 406 | Ripman, Theodore (1500) | Lost 0-2 | -161344 |
| 2modern | 302 | Blom, Ludvig (1487) | Won 2-0 | +211365 |
| 3modern | 445 | Ostlund, Carl (1500) | Won 2-0 | +201385 |
| 4modern | 229 | Balimoglu, Ari (1574) | Lost 0-2 | -141371 |
| 5modern | 493 | Campbell, Gary (1683) | Lost 1-2 | -131358 |
| 6modern | 450 | Pedersen, Jonathan (1477) | Won 2-1 | +201378 |
| 7modern | 291 | Lihoreau, Ibai (1554) | Won 2-1 | +211399 |
| 8modern | 261 | Eriksson, Oskar (1584) | Lost 0-2 | -141385 |
| top | average opponent: 1545record: 4-4 | new rating: 1385 | ||
| Grand Prix Stockholm 2016 (EMN limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 49 | Ahlgren, Tobias (1500) | Lost 0-2 | -171428 |
| 2sealed | 304 | Petsonk, Joshua (1536) | Lost 0-2 | -161412 |
| 3sealed | 554 | Van Breukelen, Vincent (1436) | Lost 0-2 | -181394 |
| 4sealed | 554 | Sperre, Haakon (1446) | Lost 0-2 | -171377 |
| 6sealed | 475 | Lepisto, Martti (1391) | Lost 0-2 | -171360 |
| top | average opponent: 1462record: 0-5 | new rating: 1360 | ||
| Grand Prix Manchester 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 494 | Rigley, Joe (1500) | Lost 1-2 | -181482 |
| 2standard | 538 | Owen, Tom (1493) | Lost 1-2 | -181464 |
| 3standard | 803 | Carre, Steven (1485) | Lost 0-2 | -171447 |
| 4standard | 793 | Hand, Ryan (1445) | Won 2-0 | +181465 |
| 5standard | 702 | Lythe, Richard (1464) | Won 2-0 | +181483 |
| 6standard | 557 | Newman, Sebastian (1523) | Lost 0-2 | -181465 |
| 7standard | 590 | Irons, Sonny (1396) | Lost 1-2 | -191446 |
| 8standard | 530 | Lewis, Laurence (1467) | Won 2-0 | +181464 |
| 9standard | 424 | McDonald, Marianne (1392) | Lost 0-2 | -191445 |
| top | average opponent: 1463record: 3-6 | new rating: 1445 | ||