Case, Jeffrey
Current rating: 1445
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1476 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 12 | Criss, Ronald (1625) | Lost 0-2 | -161460 |
| 2modern | 801 | Ferrari, James (1483) | Won 2-1 | +191479 |
| 3modern | 979 | Wulfers, Jonathan (1500) | Lost 1-2 | -181461 |
| 4modern | 1138 | McDonald, Glenn (1591) | Lost 0-2 | -161445 |
| top | average opponent: 1550record: 1-3 | new rating: 1445 | ||
| Grand Prix Providence 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 195 | Yurchick, Adam (1850) | Won 2-1 | +241524 |
| 4standard | 47 | Haak, Bryan (1682) | Lost 1-2 | -151509 |
| 5standard | 93 | Bard, Jacob (1607) | Lost 1-2 | -171492 |
| 6standard | 159 | Phipps, Corey (1557) | Lost 0-2 | -161476 |
| top | average opponent: 1674record: 1-3 | new rating: 1476 | ||
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 192 | Manuel, Anthony (1465) | Lost 1-2 | -191481 |
| 2modern | 320 | Chabot, Craig (1456) | Won 2-1 | +181499 |
| 3modern | 361 | Hartley, Tasha (1482) | Won 2-1 | +181517 |
| 4modern | 175 | Belcher, William (1514) | Won 2-0 | +181535 |
| 5modern | 153 | Navarra, Ralph (1663) | Lost 0-2 | -161519 |
| 6modern | 329 | Marmo, Timothy (1452) | Lost 0-2 | -191500 |
| top | average opponent: 1505record: 3-3 | new rating: 1500 | ||