Sorrentino, John
Current rating: 1534
Record: 5-4
| Grand Prix Tampa Bay 2002 (TOR limited) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 63 | Shvartsman, Alex (2050) | Won 2-0 | +271551 |
| 5sealed | 6 | Rutter, Brandon (1566) | Lost 1-2 | -181533 |
| 6sealed | 27 | Carlton, John (1552) | Lost 0-2 | -181515 |
| 7sealed | 64 | Duggan, Travis (1547) | Won 2-0 | +191534 |
| average opponent: 1679record: 2-2 | new rating: 1534 | |||
| Grand Prix Washington DC 1999 (UDS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 82 | Bush, Michelle (1518) | Won 0-0 | +181518 |
| 4sealed | 44 | O'Mahoney-Schwartz, Steven (1791) | Lost 0-0 | -131505 |
| 5sealed | 54 | Popkave, Daniel (1534) | Lost 0-0 | -171488 |
| 6sealed | 82 | Kauffman, Thomas (1500) | Won 0-0 | +181506 |
| 7sealed | 71 | McNeill, Dan (1505) | Won 0-0 | +181524 |
| average opponent: 1570record: 3-2 | new rating: 1524 | |||