Berglund, Zach
Current rating: 1443
Record: 1-4
| Grand Prix Oklahoma City 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 352 | Carlson, John (1411) | Lost 0-2 | -201480 |
| 2modern | 441 | Richardson, Andrew (1447) | Lost 1-2 | -181462 |
| 3modern | 628 | Renner, Richard (1447) | Won 0-0 | +181480 |
| 4modern | 544 | Ringwald, Elliot (1479) | Lost 0-2 | -181462 |
| 5modern | 547 | Tatum, Joseph (1417) | Lost 0-2 | -191443 |
| average opponent: 1440record: 1-4 | new rating: 1443 | |||