Winkelbach, Mitchell
Current rating: 1489
Record: 6-7
| Grand Prix Las Vegas 2019 (limited) (MH1 limited) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 88 | Jacobs, Adam (1581) | Lost 0-2 | -171468 |
| 2sealed | 390 | Topham, Carruth (1446) | Won 2-0 | +181486 |
| 3sealed | 500 | Ocampo, Neil (1663) | Won 2-0 | +211507 |
| 4sealed | 361 | Gonzalez, Ezequiel (1516) | Won 2-0 | +181525 |
| 5sealed | 1195 | Brunton, David (1620) | Lost 0-2 | -161509 |
| 6sealed | 278 | Conklin, Andrew (1372) | Lost 0-2 | -201489 |
| average opponent: 1533record: 3-3 | new rating: 1489 | |||
| Grand Prix Sacramento 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 64 | Chang, Joseph [USA] (1500) | Won 2-1 | +181518 |
| 2sealed | 71 | Burkett, Joseph (1573) | Won 2-0 | +191537 |
| 3sealed | 82 | Sarris, Joshua (1487) | Won 2-1 | +171554 |
| 4sealed | 140 | Rosenberg, Jack (1724) | Lost 0-2 | -151539 |
| 5sealed | 108 | Oilar, Sandra (1504) | Lost 0-2 | -181521 |
| 6sealed | 332 | Chen, Joseph (1521) | Lost 1-2 | -181503 |
| 7sealed | 310 | Scheid, Eric (1505) | Lost 0-2 | -181485 |
| average opponent: 1545record: 3-4 | new rating: 1485 | |||