Matthias, Corey
Current rating: 1452
Record: 4-7
| Grand Prix Oklahoma City 2019 (ELD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 30 | Melvin, Paul (1704) | Lost 0-2 | -141486 |
| 2standard | 113 | Edgar, James (1580) | Lost 0-2 | -161470 |
| 4standard | 127 | Russell, Jacob (1486) | Lost 1-2 | -181452 |
| average opponent: 1590record: 0-3 | new rating: 1452 | |||
| Grand Prix Kansas City 2019 (WAR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 135 | Nemnich, Chad (1500) | Won 2-0 | +181518 |
| 2standard | 90 | Kabler Sr., Jeremy (1259) | Won 2-0 | +131531 |
| 3standard | 87 | Bristol, Mark (1536) | Won 2-0 | +181549 |
| 4standard | 25 | Marriott, Nick (1726) | Won 0-0 | +221571 |
| 5standard | 31 | Kenton, Brinson (1519) | Lost 1-2 | -191552 |
| 6standard | 107 | Kingsley, Kevin (1761) | Lost 1-2 | -151537 |
| 7standard | 168 | Blanchard, David (1459) | Lost 1-2 | -191518 |
| 8standard | 130 | Valadares, Diogo (1542) | Lost 0-2 | -181500 |
| average opponent: 1538record: 4-4 | new rating: 1500 | |||