Ackerman, Sean
Current rating: 1567
Record: 12-10
| Grand Prix Atlanta 2017 (XLN standard) | starting rating: 1565 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 183 | Byers, Tonya (1572) | Won 2-0 | +181583 |
| 3standard | 272 | Harris, Keith (1541) | Won 2-0 | +171600 |
| 4standard | 4 | Palaschak, Brett (1586) | Lost 1-2 | -181582 |
| 5standard | 201 | Lea, Joshua (1523) | Lost 0-2 | -191563 |
| 6standard | 263 | Lightsey, Jordan (1518) | Lost 1-2 | -191544 |
| 7standard | 374 | Durshimer, Jake (1487) | Won 2-0 | +171561 |
| 8standard | 306 | Wear, Michael (1541) | Won 2-0 | +181579 |
| 9standard | 275 | Nakamura, Shuhei (1927) | Lost 0-2 | -121567 |
| average opponent: 1587record: 4-4 | new rating: 1567 | |||
| Grand Prix Washington DC 2017 (HOU standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 238 | D'Amato, Christopher (1527) | Won 2-0 | +181518 |
| 3standard | 199 | Guest, Spencer (1515) | Won 2-0 | +181536 |
| 4standard | 179 | Metcalf, Brian (1517) | Lost 1-2 | -181518 |
| 5standard | 120 | Markson, Samuel (1522) | Won 2-0 | +181536 |
| 6standard | 105 | Neiswender, James (1548) | Won 2-0 | +181554 |
| 7standard | 49 | Bayerlein, Ryan (1575) | Won 2-1 | +191573 |
| 8standard | 16 | Paykar, Ashkan (1610) | Lost 1-2 | -181555 |
| 9standard | 122 | Flaczinski, Jake (1700) | Won 2-0 | +211576 |
| 10standard | 30 | Walker, Noah (2022) | Lost 0-2 | -101566 |
| 11standard | 80 | Hoekman, Adriaan (1548) | Won 2-0 | +171583 |
| 12standard | 95 | Reid, Jason (1563) | Won 2-1 | +181601 |
| 13standard | 47 | Weitz, Benjamin (1991) | Lost 0-2 | -111590 |
| 14standard | 70 | Yam, Wing Chun (1974) | Lost 0-2 | -121578 |
| 15standard | 93 | Petre, Evan (1844) | Lost 0-2 | -131565 |
| average opponent: 1675record: 8-6 | new rating: 1565 | |||