Ballesteros, Jay
Current rating: 1537
Record: 5-3
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 118 | Konrady, Benjamin W (1600) | Lost 1-2 | -161484 |
| 2sealed | 451 | Rutherford, Quillian (1484) | Won 2-0 | +181502 |
| 3sealed | 454 | deline, aaron (1465) | Lost 0-2 | -191483 |
| 4sealed | 502 | McDonald, Brendan J (1482) | Won 2-0 | +181501 |
| 5sealed | 333 | Rowell, Brad (1544) | Won 2-1 | +191520 |
| 6sealed | 278 | Green, Richard (1518) | Won 2-0 | +181538 |
| 7sealed | 178 | Kneser, James (1534) | Won 2-0 | +181556 |
| 8sealed | 139 | Peterson, Michael (1498) | Lost 1-2 | -191537 |
| average opponent: 1516record: 5-3 | new rating: 1537 | |||