McCullough, Jacob
Current rating: 1462
Record: 4-6
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 42 | McMahon, Jack (1500) | Won 2-0 | +181517 |
| 2sealed | 309 | Jeannin, Jules (1443) | Lost 1-2 | -201497 |
| 3sealed | 597 | Valerio, Michael (1563) | Lost 1-2 | -161481 |
| 4sealed | 696 | Andreadakis, Jonathan (1446) | Lost 0-2 | -191462 |
| average opponent: 1488record: 1-3 | new rating: 1462 | |||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 811 | Kiser, Preston (1500) | Won 2-1 | +181518 |
| 2modern | 859 | Amati, Francesco (1518) | Won 2-0 | +181536 |
| 3modern | 830 | McGuckin, Connor (1587) | Lost 0-2 | -171519 |
| 4modern | 911 | Shillingburg, TJ (1518) | Lost 0-2 | -181501 |
| 5modern | 921 | Cockrell, Joseph (1428) | Won 2-0 | +171518 |
| 6modern | 759 | Rowe, Taylor (1468) | Lost 1-2 | -191499 |
| average opponent: 1503record: 3-3 | new rating: 1499 | |||