Armstrong, Corey
Current rating: 1479
Record: 10-15-1
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 132 | Burger, Joshua (1500) | Won 2-1 | +201459 |
| 2modern | 280 | Donato, Marino (1771) | Won 2-1 | +231482 |
| 3modern | 382 | Jackson, Cody (1458) | Won 2-1 | +181500 |
| 4modern | 93 | Didion, Shane (1567) | Lost 1-2 | -171483 |
| 5modern | 225 | Calderon, Andrew (1931) | Lost 0-2 | -111472 |
| 6modern | 370 | Luong, Marcus (1670) | Won 2-0 | +221494 |
| 7modern | 237 | Eapen, Roshen (1675) | Lost 0-2 | -151479 |
| top | average opponent: 1653record: 4-3 | new rating: 1479 | ||
| Grand Prix Las Vegas 2017 (legacy) (legacy) | starting rating: 1425 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 344 | Cuba Nogales, Mauricio (1537) | Won 2-0 | +201445 |
| 4legacy | 171 | Naide, Kazutaka (1733) | Lost 0-2 | -131432 |
| 5legacy | 510 | Ross, Tom (2010) | Lost 1-2 | -81424 |
| 6legacy | 515 | Falk, Coleman (1654) | Won 2-1 | +221446 |
| 7legacy | 397 | Webb, Luke (1542) | Lost 1-2 | -161430 |
| 8legacy | 474 | Kobayashi, Tatsuumi (1929) | Won 2-1 | +261456 |
| 9legacy | 347 | Bertolin, Marc (1533) | Lost 0-2 | -171439 |
| top | average opponent: 1705record: 3-4 | new rating: 1439 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1442 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 273 | Svensson, Danny (1500) | Lost 0-2 | -171425 |
| top | record: 0-1 | new rating: 1425 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 780 | Fusco, Roman (1514) | Won 2-0 | +201450 |
| 3legacy | 942 | Meikle, Jeremy (1569) | Draw 1-1 | +21452 |
| 4legacy | 860 | Setree, Cody (1482) | Won 2-1 | +191471 |
| 5legacy | 623 | Osso, Stephen (1500) | Lost 0-2 | -181453 |
| 6legacy | 727 | Musser, Dan (1853) | Lost 0-2 | -111442 |
| top | average opponent: 1584record: 2-2-1 | new rating: 1442 | ||
| Grand Prix Los Angeles 2014 (KTK standard) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 423 | Martinell, Chad (1485) | Lost 1-2 | -181446 |
| 2standard | 449 | Gossett, Scott (1464) | Lost 0-2 | -181428 |
| 3standard | 816 | Bollier, Jonathan (1464) | Won 2-1 | +191447 |
| 4standard | 651 | Fleisch, Aaron (1516) | Lost 0-2 | -171430 |
| top | average opponent: 1482record: 1-3 | new rating: 1430 | ||
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1180 | Linn, Ricky (1485) | Lost 0-2 | -181482 |
| 2sealed | 1326 | Gentry, David (1482) | Lost 0-2 | -181464 |
| top | average opponent: 1483record: 0-2 | new rating: 1464 | ||