Christopherson, John
Current rating: 1501
Record: 3-3
| Grand Prix Portland 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 197 | [anonymous] | Won 2-1 | +181518 |
| 2modern | 161 | Ricci, Joseph (1616) | Lost 1-2 | -161502 |
| 3modern | 195 | Williams, Aaron M (1431) | Lost 0-2 | -191483 |
| 4modern | 356 | Jelden, Keven (1482) | Won 2-1 | +171500 |
| 5modern | 365 | Berlin, Jesse (1509) | Won 2-0 | +191519 |
| 6modern | 198 | HUME, MICHAEL (1519) | Lost 0-2 | -181501 |
| average opponent: 1510record: 3-3 | new rating: 1501 | |||