Hallberg, Gustaf
Current rating: 1424
| Grand Prix London 2016 (KLD limited) | starting rating: 1432 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 831 | Dorle, Anthony (1705) | Lost 1-2 | -131419 |
| 2sealed | 687 | Rigley, Joe (1428) | Won 2-0 | +181437 |
| 3sealed | 680 | Baker, Charlie (1499) | Won 2-0 | +191456 |
| 4sealed | 757 | Van Den Broek, Raymond (1413) | Won 2-1 | +171473 |
| 5sealed | 372 | Channing, Henry (1758) | Lost 1-2 | -131460 |
| 6sealed | 605 | Forsyth, Nathaniel (1428) | Lost 0-2 | -181442 |
| 7sealed | 595 | Vilsgaard, Rasmus (1440) | Lost 1-2 | -181424 |
| top | average opponent: 1525record: 3-4 | new rating: 1424 | ||
| Grand Prix Gothenburg 2013 (DGM limited) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 115 | Johansson, Johnas (1472) | Won 2-1 | +181449 |
| 2sealed | 35 | Wahlquist, Alex (1432) | Lost 1-2 | -181431 |
| 3sealed | 199 | Persaud, Arun (1318) | Won 2-0 | +161447 |
| 4sealed | 188 | Semkin, Alexander (1561) | Lost 0-2 | -161431 |
| 5sealed | 247 | Tengblad, Johan (1471) | Won 2-1 | +191450 |
| 6sealed | 185 | Inerot, Niclas (1452) | Lost 0-2 | -181432 |
| top | average opponent: 1451record: 3-3 | new rating: 1432 | ||
| Grand Prix Gothenburg 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 140 | Laier, Peter (1605) | Lost 0-2 | -161484 |
| 2sealed | 192 | Nilsson, Johan (1542) | Lost 0-2 | -171467 |
| 3sealed | 200 | Lindblom, Alfred (1452) | Lost 0-2 | -181449 |
| 4sealed | 221 | Strahlert, Magnus (1446) | Lost 0-2 | -181431 |
| top | average opponent: 1511record: 0-4 | new rating: 1431 | ||