Martin, Jeff
Current rating: 1366
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 292 | Giering, Cole (1500) | Lost 1-2 | -171412 |
| 2modern | 325 | Litovsky, Kon (1481) | Draw 1-1 | +11413 |
| 3modern | 390 | Nasiff, Jose (1692) | Lost 0-2 | -131400 |
| 4modern | 432 | Roberts, Caitlyn (1443) | Lost 0-2 | -171383 |
| 5modern | 401 | Hill, Zeth (1426) | Lost 0-2 | -171366 |
| top | average opponent: 1509record: 0-4-1 | new rating: 1366 | ||
| Grand Prix Atlanta 2016 (KLD limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 910 | Kessler, Alex (1470) | Lost 0-2 | -181464 |
| 2sealed | 1110 | Boland, Andrew (1512) | Lost 1-2 | -171447 |
| 3sealed | 1238 | Henry, Jon (1446) | Lost 1-2 | -181429 |
| top | average opponent: 1476record: 0-3 | new rating: 1429 | ||
| Grand Prix Phoenix 2014 (BNG standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 405 | Calderon, Michael (1500) | Lost 0-2 | -181482 |
| 2standard | 454 | Vasi, Mark (1482) | Won 2-0 | +181500 |
| 3standard | 534 | Shelton, Charles (1501) | Lost 1-2 | -181482 |
| 4standard | 470 | Flosbach, Karl (1482) | Won 2-1 | +181500 |
| 5standard | 377 | Camilleri, Adrian (1500) | Lost 0-2 | -181482 |
| 6standard | 479 | Brunker, Chris (1465) | Lost 0-2 | -181464 |
| 7standard | 411 | Rambo, Joshua (1463) | Won 2-0 | +181482 |
| 8standard | 306 | Mull, Jason (1494) | Lost 1-2 | -181464 |
| 9standard | 272 | McIntire, Lee (1480) | Won 2-0 | +181482 |
| top | average opponent: 1485record: 4-5 | new rating: 1482 | ||