Maciak, Matthew
Current rating: 1389
Record: 8-15-2
| Grand Prix Madison 2019 (WAR limited) | starting rating: 1415 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 194 | Wolter, Brenton (1500) | Lost 1-2 | -171398 |
| 2sealed | 259 | Calabro, Zachary (1428) | Won 2-1 | +191417 |
| 3sealed | 272 | Hamann, Lucas (1500) | Lost 0-2 | -171400 |
| 4sealed | 336 | Allbright, Bob (1775) | Lost 0-2 | -111389 |
| top | average opponent: 1551record: 1-3 | new rating: 1389 | ||
| Grand Prix Milwaukee 2018 (GRN standard) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 110 | Webster, David (1466) | Lost 0-2 | -181449 |
| 2standard | 312 | Den Boon, Martijn (1441) | Lost 0-2 | -181431 |
| 3standard | 610 | Hoebing, Hayden (1471) | Lost 1-2 | -171414 |
| 4standard | 597 | Hoyt, Daryl (1423) | Won 2-1 | +181432 |
| 5standard | 540 | Calvo, Josue (1463) | Lost 1-2 | -171415 |
| top | average opponent: 1453record: 1-4 | new rating: 1415 | ||
| Grand Prix Indianapolis 2017 (HOU limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 139 | Waite, Charles (1500) | Lost 0-2 | -171446 |
| 2sealed | 433 | Choueiri, Luis Felipe (1482) | Lost 1-2 | -181428 |
| 3sealed | 523 | Dixon, Joshua (1467) | Draw 1-1 | +11429 |
| 4sealed | 526 | Evans, Caleb (1429) | Won 2-0 | +181447 |
| 5sealed | 448 | Calamaro, Yaakov (1468) | Lost 0-2 | -171430 |
| 6sealed | 462 | Robinson, John (1496) | Won 2-0 | +191449 |
| 7sealed | 396 | Philpot, Josh (1487) | Won 2-1 | +181467 |
| top | average opponent: 1476record: 3-3-1 | new rating: 1467 | ||
| Grand Prix Milwaukee 2016 (KLD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 298 | Shepard, Benjamin (1520) | Lost 0-2 | -181482 |
| 2sealed | 491 | Kahnke, Sam (1523) | Lost 0-2 | -171465 |
| 3sealed | 561 | Gavinski, Andrew (1468) | Lost 1-2 | -181447 |
| 4sealed | 601 | Stephens, Wade (1401) | Lost 0-2 | -191428 |
| 5sealed | 574 | Gray, James (1436) | Lost 1-2 | -181410 |
| 6sealed | 520 | Richter, Kyle 266 (1353) | Draw 1-1 | -11409 |
| 7sealed | 455 | Serota, Harold (1390) | Won 2-1 | +181427 |
| 8sealed | 384 | Kamenick, Alexander (1427) | Won 2-1 | +181445 |
| 9sealed | 328 | Ballesteros, Andrew (1447) | Won 2-0 | +181463 |
| top | average opponent: 1440record: 3-5-1 | new rating: 1463 | ||