Karpewicz, Chad
Current rating: 1485
| Grand Prix New Jersey 2020 (THB limited) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 401 | Rodriguez, Alex (1851) | Lost 0-2 | -121503 |
| 2sealed | 469 | Berg, Greg (1601) | Lost 1-2 | -161487 |
| 3sealed | 626 | Caminiti, Michael (1463) | Lost 0-2 | -181469 |
| 4sealed | 639 | Spencer, Darby (1449) | Won 2-0 | +171486 |
| 5sealed | 543 | Yedidia, Adam (1470) | Lost 0-2 | -181468 |
| 6sealed | 471 | Pollard, Jack (1441) | Won 2-1 | +171485 |
| top | average opponent: 1546record: 2-4 | new rating: 1485 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 15 | Fenstermaker, Bradley (1518) | Won 2-0 | +191468 |
| 2sealed | 399 | Pothering, Ryan (1446) | Lost 0-2 | -191449 |
| 3sealed | 444 | Reyes, Daniel (1644) | Won 2-1 | +221471 |
| 4sealed | 547 | Shelton, David (1518) | Lost 0-2 | -171454 |
| 5sealed | 595 | Holt, Christopher (1483) | Won 2-1 | +181472 |
| 6sealed | 333 | Ley, Isaiah (1544) | Lost 0-2 | -161456 |
| 7sealed | 424 | Steht, Lee (1664) | Won 2-0 | +211477 |
| 8sealed | 348 | Clark, Tom (1585) | Won 2-1 | +201497 |
| 9sealed | 201 | Brown, William (1496) | Won 2-0 | +181515 |
| top | average opponent: 1544record: 6-3 | new rating: 1515 | ||
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 365 | English, Will (1500) | Won 2-0 | +181518 |
| 2sealed | 332 | Manning, Christopher (1700) | Lost 0-2 | -151503 |
| 3sealed | 397 | Reed, John (1501) | Lost 0-2 | -181485 |
| 4sealed | 782 | Baker, JC (1487) | Won 2-0 | +181503 |
| 5sealed | 632 | Anderson, Richard (1444) | Lost 0-2 | -191484 |
| 6sealed | 575 | Ahmad, Arbob (1506) | Lost 1-2 | -171467 |
| 7sealed | 467 | Hinkle, Stephen (1468) | Lost 1-2 | -181449 |
| 8sealed | 365 | Dizon, Adrian (1448) | Won 0-0 | +181467 |
| 9sealed | 289 | Cooper, Dustin (1467) | Lost 0-2 | -181449 |
| top | average opponent: 1502record: 3-6 | new rating: 1449 | ||