Diffee, Robert
Current rating: 1488
Record: 2-3
| Grand Prix Providence 2018 (M19 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 70 | Brewer, Paul (1433) | Won 2-0 | +171517 |
| 2standard | 68 | Sorace, Joe (1521) | Lost 0-2 | -181499 |
| 3standard | 264 | Pelletier, Chris (1671) | Won 2-0 | +211520 |
| 4standard | 124 | Hudak, Jerome (1517) | Lost 1-2 | -181502 |
| 5standard | 226 | Patella, Keith (1736) | Lost 0-2 | -141488 |
| average opponent: 1576record: 2-3 | new rating: 1488 | |||