O'Brien-Blondino, Gregory
Current rating: 1506
| Grand Prix Charlotte 2015 (modern) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 945 | Courson, David (1437) | Lost 1-2 | -201505 |
| 2modern | 1013 | Walpole, Chandler (1481) | Won 2-0 | +181523 |
| 3modern | 1038 | Pearce, Ryan (1686) | Lost 1-2 | -151508 |
| 4modern | 1015 | Collins, Corey P (1482) | Won 2-1 | +171525 |
| 5modern | 913 | Li, Mingliang (1451) | Lost 0-2 | -191506 |
| top | average opponent: 1508record: 2-3 | new rating: 1506 | ||
| Grand Prix Atlantic City 2015 (DTK limited) | starting rating: 1529 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 152 | Fiore, Chris (1500) | Lost 1-2 | -181511 |
| 2sealed | 488 | Rhye, Jordan (1549) | Lost 1-2 | -181493 |
| 3sealed | 683 | Kleine, Dan (1462) | Won 2-0 | +181511 |
| 4sealed | 619 | Hand, Daniel (1484) | Won 2-0 | +171528 |
| 5sealed | 436 | Bourque, Matthew (1371) | Won 2-0 | +151543 |
| 6sealed | 396 | Feldman, Joshua (1519) | Lost 1-2 | -181525 |
| top | average opponent: 1481record: 3-3 | new rating: 1525 | ||
| Grand Prix Baltimore 2014 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 109 | Knowles, Alexander (1500) | Won 2-0 | +181518 |
| 2sealed | 173 | Baker, JC (1386) | Lost 0-2 | -201498 |
| 3sealed | 293 | Robins, Scott (1615) | Lost 0-2 | -161482 |
| 4sealed | 482 | Abramson, Jonathan (1453) | Won 2-0 | +171499 |
| 5sealed | 425 | Tremblay, Sebastien (1657) | Won 2-0 | +211520 |
| 6sealed | 266 | Jones, Elliott (1788) | Won 2-1 | +231543 |
| 7sealed | 176 | Cronin, Christopher (1544) | Lost 1-2 | -181525 |
| 8sealed | 190 | Zung, Stacy (1548) | Won 2-1 | +181543 |
| 9sealed | 125 | Hall, Zack (1761) | Lost 0-2 | -141529 |
| top | average opponent: 1584record: 5-4 | new rating: 1529 | ||