O'Brien, Robert
Current rating: 1488
Record: 2-3
| Grand Prix Calgary 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 194 | Gifford, Sean (1809) | Won 2-1 | +231523 |
| 2modern | 102 | Kohut, Sean (1516) | Won 2-1 | +181541 |
| 3modern | 38 | On, Reno (1492) | Lost 0-2 | -191522 |
| 4modern | 217 | Brown, Dylan [CAN] (1517) | Lost 0-2 | -181504 |
| 5modern | 323 | Telecki, Jozef (1594) | Lost 0-2 | -161488 |
| average opponent: 1586record: 2-3 | new rating: 1488 | |||