Chepenik, Jonathan
Current rating: 1494
Record: 10-11
| Grand Prix Madison 2015 (BFZ limited) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1020 | Georges, Steven (1500) | Lost 0-2 | -181477 |
| 2sealed | 595 | Reed, Nicholas (1481) | Won 2-0 | +181495 |
| 3sealed | 378 | Singleton, Chris (1412) | Won 2-1 | +171512 |
| 4sealed | 230 | Loewenthal, Ted (1518) | Lost 0-2 | -181494 |
| top | average opponent: 1478record: 2-2 | new rating: 1494 | ||
| Grand Prix Miami 2015 (FRF standard) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 347 | Price, Pat (1755) | Won 2-1 | +221532 |
| 2standard | 298 | Mathos, Paul (1517) | Lost 1-2 | -181514 |
| 3standard | 309 | Fairman, Joshua (1483) | Lost 1-2 | -191495 |
| top | average opponent: 1585record: 1-2 | new rating: 1495 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1005 | Gedvilas, Matthew (1518) | Won 2-0 | +191463 |
| 2sealed | 486 | Mock, William (1518) | Lost 0-2 | -171446 |
| 3sealed | 417 | Frowein, Colby (1500) | Won 2-0 | +191465 |
| 4sealed | 246 | Maise, Andrew (1446) | Won 0-0 | +181483 |
| 5sealed | 179 | Wallerstein, Robert (1716) | Lost 0-2 | -141469 |
| 6sealed | 221 | Hardie, Brian (1602) | Won 2-1 | +211490 |
| 7sealed | 192 | Lauer, Steven (1524) | Won 2-0 | +181508 |
| 8sealed | 56 | Boyer, Charles (1552) | Won 2-1 | +191527 |
| 9sealed | 85 | Lewis, James (1555) | Lost 0-2 | -171510 |
| top | average opponent: 1548record: 6-3 | new rating: 1510 | ||
| Grand Prix Atlanta 2014 (JOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 461 | Massey, Kevin (1437) | Lost 1-2 | -191481 |
| 2sealed | 517 | Meola, Anthony (1482) | Lost 0-2 | -181463 |
| 3sealed | 769 | Harvey, Mike (1417) | Lost 1-2 | -191444 |
| 4sealed | 781 | Paz, Jose (1445) | Won 2-0 | +181462 |
| 5sealed | 700 | Nickell, Denae (1466) | Lost 0-2 | -181444 |
| top | average opponent: 1449record: 1-4 | new rating: 1444 | ||