Sievert, Joe
Current rating: 1521
Record: 6-5-1
| Grand Prix Charlotte 2015 (modern) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1295 | Phan, Kevin (1545) | Won 2-0 | +191554 |
| 2modern | 1286 | Burns, Dick (1435) | Won 2-0 | +151569 |
| 3modern | 1290 | Mathis, Jeffrey (1474) | Lost 0-2 | -191550 |
| 4modern | 1444 | Maynard, Pascal (2012) | Lost 1-2 | -101540 |
| 5modern | 1309 | Drews, Samuel (1500) | Lost 0-2 | -191521 |
| average opponent: 1593record: 2-3 | new rating: 1521 | |||
| Grand Prix Miami 2015 (FRF standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 369 | Sykes, Tony (1500) | Won 2-0 | +181518 |
| 2standard | 90 | Velasco, Miguel (1467) | Draw 1-1 | -11517 |
| 3standard | 259 | Palenkas, Robert (1518) | Won 2-0 | +181535 |
| 4standard | 149 | Marecos Candeias, Tiago David (1643) | Won 2-0 | +201555 |
| 5standard | 72 | Sparks, Colin (1531) | Lost 0-2 | -181537 |
| 6standard | 172 | Kramer, Matthias R (1505) | Won 2-0 | +171554 |
| 7standard | 106 | Dorsey, Kyle (1523) | Lost 0-2 | -191535 |
| average opponent: 1527record: 4-2-1 | new rating: 1535 | |||