McCullough, Jeffrey
Current rating: 1523
Record: 17-18
| Grand Prix Cleveland 2019 (RNA limited) | starting rating: 1477 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 253 | Murray, Jeffrey (1516) | Won 2-1 | +191496 |
| 2sealed | 178 | Chapman, Cliff (1518) | Lost 1-2 | -181478 |
| 3sealed | 438 | Haley, Connor (1489) | Won 2-1 | +191497 |
| 4sealed | 362 | Masters, Chase (1913) | Lost 0-2 | -111486 |
| 5sealed | 336 | Robertson, Demetria (1516) | Lost 1-2 | -181468 |
| 6sealed | 391 | Yeisley, Alex (1486) | Won 2-1 | +191487 |
| 7sealed | 283 | Silvestri, Greg (1514) | Won 2-0 | +181505 |
| 8sealed | 223 | Roe, Kyle (1529) | Won 2-0 | +181523 |
| top | average opponent: 1560record: 5-3 | new rating: 1523 | ||
| Grand Prix Pittsburgh 2018 (DOM standard) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 87 | Zyla, Sarah (1789) | Lost 0-2 | -121443 |
| 4standard | 281 | Meadows, Robert (1486) | Won 2-0 | +191462 |
| 5standard | 196 | Droggitis, Dustin (1745) | Lost 1-2 | -131449 |
| 6standard | 257 | Shin, Stephen (1515) | Won 2-1 | +191468 |
| 7standard | 114 | Williams, Caleb (1571) | Won 2-0 | +201488 |
| 8standard | 91 | Falcioni, Matthew (1920) | Lost 1-2 | -111477 |
| top | average opponent: 1671record: 3-3 | new rating: 1477 | ||
| Grand Prix Houston 2016 (OGW standard) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 624 | Hobbs, Nicholas (1500) | Lost 0-2 | -171448 |
| 2standard | 633 | Fernandez, Richard (1432) | Lost 0-2 | -191429 |
| 3standard | 834 | Reynolds, Jared (1412) | Won 2-0 | +181447 |
| 4standard | 789 | Zaidi, Jibraeel (1784) | Lost 0-2 | -121435 |
| 5standard | 795 | Scoggin, James (1464) | Lost 0-2 | -181417 |
| 6standard | 723 | Loftis, Joe (1447) | Won 2-0 | +191436 |
| 7standard | 647 | Hoffiz, Simon (1460) | Won 2-0 | +181454 |
| 8standard | 520 | Tamayo, Jonathan (1493) | Lost 0-2 | -171437 |
| 9standard | 450 | Garcia, Giovanni (1432) | Won 2-0 | +181455 |
| top | average opponent: 1492record: 4-5 | new rating: 1455 | ||
| Grand Prix Atlantic City 2013 (RTR standard) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 154 | Ward, Daniel (1539) | Won 2-0 | +191483 |
| 2standard | 47 | Colajezzi, Carolyn (1522) | Lost 0-2 | -171466 |
| 3standard | 495 | Brady, Jennifer (1345) | Won 2-1 | +161482 |
| 4standard | 304 | Cudia, Ben (1471) | Lost 0-2 | -181464 |
| 5standard | 443 | Colaco, Marc (1506) | Lost 0-2 | -181446 |
| 6standard | 503 | Conlon, Anthony (1480) | Won 2-0 | +191465 |
| top | average opponent: 1477record: 3-3 | new rating: 1465 | ||
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 129 | Anderson, Ryan (1528) | Lost 0-2 | -171483 |
| 2standard | 437 | Will, Joshua (1482) | Won 2-1 | +171500 |
| 3standard | 245 | Gress, Bobby (1484) | Lost 0-2 | -181482 |
| 4standard | 540 | Miller, Byron (1483) | Won 2-1 | +181500 |
| 5standard | 498 | Irvin, Joseph (1482) | Lost 0-2 | -181482 |
| 6standard | 456 | Gradert, Andrew (1481) | Lost 0-2 | -181464 |
| top | average opponent: 1490record: 2-4 | new rating: 1464 | ||