Hjersman, Jonathan
Current rating: 1491
Record: 2-3-1
| Grand Prix Los Angeles 2018 (M19 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 48 | Stone, Alexander (1564) | Won 2-1 | +191519 |
| 4standard | 22 | Russell, Marco (1568) | Draw 1-1 | +11520 |
| 5standard | 64 | Pamintuan, Michael (1524) | Won 2-0 | +181538 |
| 6standard | 31 | Eck, Kyle (1706) | Lost 0-2 | -151523 |
| 7standard | 94 | Ober, Jack (1692) | Lost 1-2 | -151508 |
| 8standard | 171 | Spellacy, Michael (1542) | Lost 1-2 | -171491 |
| average opponent: 1599record: 2-3-1 | new rating: 1491 | |||