Zipperlen, Ben A
Current rating: 1434
Record: 3-7
| Grand Prix Chicago 2012 (modern) | starting rating: 1471 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 25 | Ullo, Brad (1461) | Won 2-0 | +181489 |
| 2modern | 36 | Thornton, Geo E (1525) | Won 2-1 | +191508 |
| 3modern | 96 | Skowronski, Tye (1535) | Lost 0-2 | -181490 |
| 4modern | 239 | Harris, Rocky (1362) | Lost 0-2 | -201470 |
| 5modern | 373 | Foss, Gregory (1448) | Lost 0-2 | -181452 |
| 6modern | 388 | GERRING, SAM (1482) | Lost 0-2 | -181434 |
| average opponent: 1469record: 2-4 | new rating: 1434 | |||
| Grand Prix Lincoln 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 41 | Cabral, Sean (1569) | Lost 1-2 | -171483 |
| 2modern | 221 | Hinkle, Thomas (1482) | Lost 1-2 | -181465 |
| 3modern | 288 | Miller, Kyle M (1464) | Won 2-0 | +181483 |
| 4modern | 302 | Hansen, Matt (1832) | Lost 0-2 | -121471 |
| average opponent: 1587record: 1-3 | new rating: 1471 | |||