Halucha, Robert
Current rating: 1502
| Grand Prix Detroit 2019 (M20 limited) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 85 | Pargh, David (1818) | Lost 0-2 | -121504 |
| 3sealed | 270 | Hudson, Nathan (1353) | Won 2-0 | +151519 |
| 4sealed | 127 | Carter, Dakota (1450) | Won 2-1 | +171536 |
| 5sealed | 60 | Opalka, Jason (1706) | Lost 1-2 | -151521 |
| 6sealed | 107 | Pitler, Matt (1456) | Lost 1-2 | -191502 |
| top | average opponent: 1557record: 2-3 | new rating: 1502 | ||
| Grand Prix Cleveland 2019 (RNA limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 55 | O'Neal, Billy (1500) | Won 2-0 | +181482 |
| 2sealed | 128 | Silvestri, Greg (1518) | Won 2-1 | +191501 |
| 3sealed | 211 | Geer, Brett (1672) | Lost 0-2 | -151486 |
| 4sealed | 258 | Williams, David A (1780) | Won 2-1 | +231509 |
| 5sealed | 194 | Olszowy, Jonathan (1512) | Lost 1-2 | -181491 |
| 6sealed | 325 | Arko, Scott (1524) | Won 2-1 | +191510 |
| 7sealed | 235 | Lim, Ernest (1863) | Won 2-1 | +241534 |
| 8sealed | 141 | Ernst, David (1545) | Lost 1-2 | -181516 |
| top | average opponent: 1614record: 5-3 | new rating: 1516 | ||
| Grand Prix Toronto 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 43 | Viola, Joe (1500) | Lost 1-2 | -181482 |
| 2sealed | 210 | Manners, Devon (1482) | Won 2-0 | +181500 |
| 3sealed | 235 | Chang, Michael Y (1500) | Lost 0-2 | -181482 |
| 4sealed | 209 | Seigman, Daniel (1466) | Lost 1-2 | -181464 |
| top | average opponent: 1487record: 1-3 | new rating: 1464 | ||