Marcello, Joshua
Current rating: 1454
Record: 4-7
| Grand Prix Detroit 2016 (modern) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 91 | Hall, Christopher (1451) | Lost 0-2 | -181452 |
| 2modern | 945 | Lageman, Sean (1483) | Lost 1-2 | -171435 |
| 3modern | 1100 | Craven, Craig (1464) | Won 2-0 | +181453 |
| 4modern | 809 | Scadden, Kenneth (1487) | Lost 0-2 | -171436 |
| 5modern | 1110 | Urban, Nicholas (1455) | Won 2-1 | +181454 |
| average opponent: 1468record: 2-3 | new rating: 1454 | |||
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 219 | Serrano-McEwen, Jake (1518) | Lost 0-2 | -181482 |
| 2modern | 681 | Hostetter, Cory (1486) | Won 2-0 | +181500 |
| 3modern | 875 | Desotelle, Dwight (1647) | Lost 1-2 | -151485 |
| 4modern | 905 | Smith, Andy (1464) | Won 2-1 | +181503 |
| 5modern | 614 | Vance, James (1719) | Lost 0-2 | -141489 |
| 6modern | 804 | Krushinski, Colin (1480) | Lost 1-2 | -191470 |
| average opponent: 1552record: 2-4 | new rating: 1470 | |||