Riddle Jr, Jeff
Current rating: 1407
| Grand Prix Charlotte 2016 (modern) | starting rating: 1436 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 495 | Carswell, William (1539) | Lost 0-2 | -161420 |
| 2modern | 882 | Ng, Joseph (1571) | Lost 1-2 | -151405 |
| 3modern | 1008 | Drury, Brandon (1399) | Lost 0-2 | -181387 |
| 4modern | 872 | Patel, Nikhil (1485) | Won 2-0 | +201407 |
| top | average opponent: 1499record: 1-3 | new rating: 1407 | ||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 398 | Wells, Forrest T (1500) | Lost 1-2 | -171430 |
| 2modern | 539 | Stigall, Matthew B (1479) | Lost 1-2 | -181412 |
| 3modern | 640 | Gerszewski, Josh (1463) | Won 2-0 | +191431 |
| 4modern | 603 | Ricci, John R (1483) | Won 2-1 | +191450 |
| 5modern | 459 | Osborne, Zachary (1425) | Lost 0-1 | -181432 |
| 6modern | 519 | Boyle, Charles M (1483) | Won 2-0 | +191451 |
| 7modern | 423 | Stone, Jeffrey (1574) | Lost 0-2 | -161435 |
| 8modern | 400 | Oakes, Michael (1459) | Won 2-1 | +181453 |
| 9modern | 363 | Jones, Brad (1500) | Lost 0-2 | -171436 |
| top | average opponent: 1485record: 4-5 | new rating: 1436 | ||
| Grand Prix Washington DC 2014 (JOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 373 | Newcombe, Steve (1575) | Lost 0-2 | -171483 |
| 2sealed | 380 | King, Zackary (1482) | Lost 0-2 | -181465 |
| 3sealed | 630 | Novakowski, George (1421) | Lost 0-2 | -181447 |
| top | average opponent: 1493record: 0-3 | new rating: 1447 | ||