Cortes, Marlon
Current rating: 1375
Record: 4-12
| Grand Prix Las Vegas 2019 (limited) (MH1 limited) | starting rating: 1405 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 161 | Lunch, Benjamin (1470) | Lost 1-2 | -171388 |
| 2sealed | 352 | Skonnord, Ryan (1414) | Lost 1-2 | -181370 |
| 3sealed | 1221 | Scott, Sinclair (1471) | Won 2-0 | +201390 |
| 4sealed | 450 | Wredberg, Christopher (1559) | Lost 1-2 | -151375 |
| top | average opponent: 1478record: 1-3 | new rating: 1375 | ||
| Grand Prix Las Vegas 2018 (limited) (DOM limited) | starting rating: 1417 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 90 | Robert, Mathieu (1731) | Lost 0-2 | -121405 |
| top | record: 0-1 | new rating: 1405 | ||
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 359 | Oxford, Brian (1464) | Lost 1-2 | -181452 |
| 2sealed | 857 | Pastore, Philip (Tony) (1483) | Won 2-1 | +191471 |
| 3sealed | 960 | Marland, Sean (1436) | Lost 0-2 | -191452 |
| 4sealed | 832 | Frias, Matthew (1482) | Lost 1-2 | -171435 |
| 5sealed | 926 | Music, Dennis (1471) | Lost 0-2 | -181417 |
| top | average opponent: 1467record: 1-4 | new rating: 1417 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 163 | Poklitar, Ken (1523) | Won 2-0 | +181518 |
| 2sealed | 264 | Le Friant, Christopher (1698) | Lost 0-2 | -141504 |
| 3sealed | 274 | Leyva, Orlando (1480) | Lost 0-2 | -191485 |
| 4sealed | 445 | Feil, Derek (1627) | Won 2-0 | +211506 |
| 5sealed | 368 | Bingham, William (1537) | Lost 0-2 | -181488 |
| 6sealed | 322 | Koenraadt, Matthew (1482) | Lost 0-2 | -181470 |
| top | average opponent: 1558record: 2-4 | new rating: 1470 | ||