Brown, Jonatan
Current rating: 1531
| Grand Prix Liverpool 2015 (FRF limited) | starting rating: 1568 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 526 | Shaw, Geoff (1500) | Won 2-0 | +171585 |
| 2sealed | 286 | Orchard, Sam (1518) | Lost 1-2 | -201565 |
| 3sealed | 600 | Havlik, Michal (1722) | Lost 1-2 | -151550 |
| 4sealed | 598 | Spilsbury, Mark (1464) | Lost 0-2 | -191531 |
| top | average opponent: 1551record: 1-3 | new rating: 1531 | ||
| Grand Prix Prague 2014 (modern) | starting rating: 1557 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 176 | Binder, Patrick (1419) | Lost 0-2 | -201537 |
| 2modern | 458 | Krystyan, Adrian (1484) | Lost 1-2 | -191518 |
| 3modern | 642 | Dawid, Pascal (1432) | Won 2-0 | +161534 |
| 4modern | 519 | Pitalot, Cyril (1650) | Won 2-1 | +201554 |
| 5modern | 453 | Gschwantner, Jan (1320) | Won 2-1 | +141568 |
| 6modern | 314 | Guthmann, Yann (1691) | Won 2-1 | +201588 |
| 7modern | 159 | Steinecke, Michael (1601) | Lost 1-2 | -171571 |
| 8modern | 336 | Tennivaara, Sabina (1517) | Lost 0-2 | -191552 |
| 9modern | 313 | Havelka, Jakub (1446) | Won 2-0 | +161568 |
| top | average opponent: 1507record: 5-4 | new rating: 1568 | ||
| Grand Prix Gothenburg 2013 (DGM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 55 | Lundstrom, Fredrik (1500) | Won 2-0 | +181518 |
| 2sealed | 110 | Gubonin, Konstantin (1520) | Won 2-0 | +181536 |
| 3sealed | 69 | van den Wouwer, Chris (1521) | Won 2-0 | +181554 |
| 4sealed | 126 | Falk, Calle (1554) | Won 2-1 | +181572 |
| 5sealed | 291 | Reale, Riccardo (1749) | Lost 0-2 | -151557 |
| 6sealed | 243 | Schmidt, Gustav (1462) | Lost 0-2 | -201537 |
| 7sealed | 185 | Messow, Philip (1608) | Lost 0-2 | -161521 |
| 8sealed | 173 | Wouters, Robin (1515) | Won 2-0 | +171538 |
| 9sealed | 116 | Simonsson, Johan (1587) | Won 2-0 | +191557 |
| top | average opponent: 1557record: 6-3 | new rating: 1557 | ||