Borowski, Joseph
Current rating: 1502
Record: 6-6
| Grand Prix Detroit 2013 (modern) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 380 | Gromko, Radoslaw (1602) | Lost 0-2 | -161480 |
| 2modern | 467 | JOHNSTON, BRYAN (1487) | Won 0-0 | +181498 |
| 3modern | 470 | Murray, John (1501) | Won 2-1 | +181516 |
| 4modern | 409 | Lanigan, Mike (1645) | Lost 1-2 | -161500 |
| 5modern | 430 | Posont, Jack (1464) | Won 2-0 | +181518 |
| 6modern | 357 | Carlson, Lukas (1666) | Lost 1-2 | -161502 |
| average opponent: 1561record: 3-3 | new rating: 1502 | |||
| Grand Prix Chicago 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 250 | Wetzel, Bronson (1447) | Lost 0-2 | -191481 |
| 2modern | 398 | Hager, Todd (1482) | Won 2-1 | +181499 |
| 3modern | 340 | Walnoha, Jim (1499) | Won 2-0 | +181517 |
| 4modern | 183 | Halder, Jason (1449) | Lost 0-2 | -191498 |
| 5modern | 327 | Fielstra, Zachary (1544) | Won 2-1 | +191517 |
| 6modern | 217 | Harris, Rocky (1368) | Lost 1-2 | -211496 |
| average opponent: 1465record: 3-3 | new rating: 1496 | |||