Heisler, Mark
Current rating: 1471
Record: 5-7
| Grand Prix Houston 2018 (RIX limited) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 28 | Johnson, Mark E (1500) | Won 2-1 | +191481 |
| 2sealed | 32 | Thompson, Benjamin (1515) | Won 2-0 | +181499 |
| 3sealed | 186 | Ardoin, Micheal (1476) | Won 2-0 | +181517 |
| 4sealed | 66 | Joglar, Gabriel (1837) | Lost 1-2 | -121505 |
| 5sealed | 163 | Davila, David (1623) | Lost 1-2 | -161489 |
| 6sealed | 232 | Tang, Chad (1516) | Lost 1-2 | -181471 |
| average opponent: 1578record: 3-3 | new rating: 1471 | |||
| Grand Prix Atlanta 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 260 | Sims, Mitchell (1500) | Lost 0-2 | -181482 |
| 2standard | 489 | Harris, Jason (1389) | Won 2-0 | +161498 |
| 3standard | 567 | Huffstetler, Mitchell (1500) | Lost 0-2 | -181480 |
| 4standard | 481 | Zimmerman, Tomas (1482) | Lost 1-2 | -181462 |
| 5standard | 567 | Vinci, William (1437) | Won 2-1 | +181480 |
| 6standard | 509 | Haub, Jonathan (1486) | Lost 1-2 | -181462 |
| average opponent: 1466record: 2-4 | new rating: 1462 | |||