Rosenberg, Chad C
Current rating: 1513
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 259 | Jesse, Zachary (1781) | Won 2-1 | +231519 |
| 4standard | 58 | Bransfield, Justin (1554) | Lost 0-2 | -171502 |
| 5standard | 139 | Sierra, Edwin (1531) | Won 2-0 | +181520 |
| 6standard | 142 | Pongonis, Jason M (1535) | Won 2-1 | +191539 |
| 7standard | 89 | Alesi-Mullen, John (1766) | Lost 0-2 | -141525 |
| 8standard | 100 | Anderson, Todd (1864) | Lost 1-2 | -121513 |
| top | average opponent: 1672record: 3-3 | new rating: 1513 | ||
| Grand Prix Orlando 2012 (ISD standard) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 40 | Riley, Ryan (1464) | Won 2-0 | +181502 |
| 3standard | 138 | Klump, Erik (1503) | Won 2-1 | +181520 |
| 4standard | 7 | Whatley, Justin (1555) | Won 2-0 | +181538 |
| 5standard | 9 | Beasley, Orrin (1753) | Lost 0-2 | -141524 |
| 6standard | 104 | Lebron, Anthony (1551) | Lost 1-2 | -171507 |
| 7standard | 127 | Davis, Richard (1502) | Won 2-0 | +181525 |
| 8standard | 77 | Calderon, Andrew (1762) | Won 2-1 | +221547 |
| 9standard | 81 | Gamble, Eddie (1670) | Won 2-1 | +201567 |
| 10standard | 61 | Isgur, Benjamin (1538) | Lost 0-2 | -181549 |
| 11standard | 53 | Goanos, George (1522) | Lost 1-2 | -191530 |
| 12standard | 58 | Burnham, James (1613) | Lost 1-2 | -161514 |
| 13standard | 62 | Rodriguez, Steven (1539) | Lost 0-2 | -181496 |
| top | average opponent: 1581record: 6-6 | new rating: 1496 | ||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 104 | Keaveny, Joseph (1515) | Lost 0-2 | -181482 |
| 4sealed | 189 | Daley, Joshua (1500) | Won 2-0 | +191501 |
| 5sealed | 97 | Martinez, Jose M (1520) | Lost 0-2 | -181483 |
| 6sealed | 191 | Irwin, Russell (1471) | Won 2-0 | +181501 |
| 7sealed | 110 | Werner, Nicholas (1579) | Lost 1-2 | -171484 |
| top | average opponent: 1517record: 2-3 | new rating: 1484 | ||