Miedema, Mark
Current rating: 1516
Record: 9-9
| Grand Prix Indianapolis 2015 (BFZ standard) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 235 | Piechowiak, Nicholas (1500) | Lost 1-2 | -171469 |
| 2standard | 280 | Moskal, James (1482) | Won 2-0 | +181487 |
| 3standard | 411 | Yanaga, Ben (1512) | Won 2-0 | +181505 |
| 4standard | 342 | Domocmat, Jeremy (1644) | Lost 0-2 | -151490 |
| 5standard | 304 | Shilson, Christopher (1498) | Won 2-0 | +181508 |
| 6standard | 276 | White, Logan (1522) | Won 2-1 | +181526 |
| 7standard | 114 | Hinkle, Charles (1782) | Lost 1-2 | -131513 |
| 8standard | 202 | Reeves, Brian (1660) | Lost 0-2 | -161497 |
| 9standard | 210 | Handlon, Randall (1533) | Won 0-0 | +191516 |
| average opponent: 1570record: 5-4 | new rating: 1516 | |||
| Grand Prix Madison 2015 (BFZ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 373 | Bryan, Thomas (1500) | Won 2-1 | +181518 |
| 2sealed | 239 | Pine, Geo (1518) | Won 2-1 | +181536 |
| 3sealed | 154 | Podruch, Mick (1535) | Lost 1-2 | -181518 |
| 4sealed | 437 | Wang, Yuan (1518) | Won 2-1 | +181536 |
| 5sealed | 166 | Severa, Matt (1773) | Lost 1-2 | -141522 |
| 6sealed | 375 | Richter, Jon (1580) | Won 2-1 | +191541 |
| 7sealed | 296 | Yap, Joshua (1491) | Lost 1-2 | -191522 |
| 8sealed | 247 | Kopczynski, Ben (1515) | Lost 1-2 | -181504 |
| 9sealed | 1020 | Petit, Derek (1508) | Lost 0-2 | -181486 |
| average opponent: 1549record: 4-5 | new rating: 1486 | |||