Petri, Guillaume
Current rating: 1545
Record: 5-3
| Grand Prix Lyon 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 132 | Mini, Enrico (1500) | Won 2-0 | +181518 |
| 2modern | 7 | Hostettler, Christophe (1909) | Lost 0-2 | -111507 |
| 3modern | 623 | Furstenberg, Alexander (1498) | Lost 0-2 | -181489 |
| 4modern | 793 | Bentz, Guillaume (1484) | Lost 0-2 | -181471 |
| 5modern | 812 | Marienne, Lucas (1480) | Won 2-1 | +181489 |
| 6modern | 773 | Jedelhauser, Philipp (1603) | Won 2-1 | +201509 |
| 7modern | 572 | Van Immerseel, Johan (1494) | Won 2-0 | +181527 |
| 8modern | 417 | Roeben, Fritz (1540) | Won 2-1 | +181545 |
| average opponent: 1563record: 5-3 | new rating: 1545 | |||