Pengelly, Jonathan
Current rating: 1432
Record: 4-8
| Grand Prix Brussels 2018 (M19 standard) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 112 | Coleman, William (1325) | Won 2-0 | +151501 |
| 2standard | 112 | Langer, Christian (1467) | Lost 1-2 | -181483 |
| 3standard | 112 | Nylund, Niklas (1682) | Lost 0-2 | -151468 |
| 4standard | 112 | Chang, Lei-Jia (1469) | Lost 0-2 | -181450 |
| 5standard | 112 | Arushanyan, Arsen (1436) | Lost 0-2 | -181432 |
| average opponent: 1476record: 1-4 | new rating: 1432 | |||
| Grand Prix Birmingham 2018 (std) (DOM standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 65 | Frere, Jeanne (1483) | Lost 0-2 | -181482 |
| 2standard | 65 | Dold, Thomas (1482) | Won 2-1 | +181500 |
| 3standard | 65 | McIntosh, Stephen (1450) | Won 2-1 | +171517 |
| 4standard | 65 | Mouncer, Patrick (1427) | Lost 0-2 | -201497 |
| 5standard | 65 | Powell, Jack (1500) | Won 2-0 | +181515 |
| 6standard | 65 | Heuser, Marius (1787) | Lost 1-2 | -131502 |
| 7standard | 65 | Klakauskas, Paulius (1628) | Lost 0-2 | -161486 |
| average opponent: 1537record: 3-4 | new rating: 1486 | |||