Clapp, Jeff
Current rating: 1514
Record: 4-4
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 235 | Benke, Joseph (1503) | Won 2-0 | +191501 |
| 2sealed | 93 | Fisher, Wilson (1591) | Won 2-1 | +191520 |
| 3sealed | 106 | Berrios, Stephen (1953) | Lost 1-2 | -101510 |
| 4sealed | 118 | Sharf, Jackson (1489) | Won 2-1 | +171527 |
| 5sealed | 58 | Gonzalez, Phillip (1797) | Lost 1-2 | -131514 |
| average opponent: 1667record: 3-2 | new rating: 1514 | |||
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 255 | Holmes, Ryan (1486) | Won 2-0 | +181518 |
| 2modern | 218 | Dame, David (1552) | Lost 1-2 | -181500 |
| 3modern | 338 | Finkelman, Isaac (1500) | Lost 0-2 | -181482 |
| average opponent: 1513record: 1-2 | new rating: 1482 | |||