Seibert, Joel
Current rating: 1554
Record: 9-7
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1559 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 71 | Ancman, Grant (1631) | Lost 1-2 | -161543 |
| 2sealed | 319 | Boonjue, Sam (1481) | Won 2-0 | +171560 |
| 3sealed | 237 | Quint, Christopher (1501) | Lost 1-2 | -191541 |
| 4sealed | 309 | Liu, Su (1432) | Won 2-0 | +161557 |
| 5sealed | 262 | Shuss, Taylor (1499) | Won 2-1 | +171574 |
| 6sealed | 184 | Nelson, Mark (1498) | Lost 0-2 | -201554 |
| average opponent: 1507record: 3-3 | new rating: 1554 | |||
| Grand Prix Sacramento 2014 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 182 | Robertson, Simon (1596) | Won 2-0 | +201520 |
| 4sealed | 2 | Stern, Jon (1951) | Lost 0-2 | -111509 |
| 5sealed | 83 | Struble, Austen (1536) | Won 2-0 | +191528 |
| 6sealed | 116 | Costa, Joseph (1540) | Won 2-0 | +181546 |
| 7sealed | 75 | Rodrigues, Dante (1577) | Won 2-0 | +181564 |
| 8sealed | 19 | Molina, Cody (1677) | Won 2-1 | +201584 |
| 9sealed | 10 | DeTora, Melissa (1811) | Lost 1-2 | -131571 |
| 10draft | 100 | Yoo, Bradley (1828) | Lost 1-2 | -141557 |
| 11draft | 3 | Nguyen, Kevin (1550) | Lost 0-2 | -181539 |
| 12draft | 34 | Moss, Brian (1672) | Won 2-1 | +201559 |
| average opponent: 1674record: 6-4 | new rating: 1559 | |||