Sumstad, Jennifer
Current rating: 1503
Record: 6-6-1
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 131 | Peterson, Michael (1418) | Lost 0-2 | -191484 |
| 2sealed | 548 | Sifford, Andrew (1482) | Won 2-0 | +171501 |
| 3sealed | 345 | Boyd, Michael (1499) | Won 2-1 | +181519 |
| 4sealed | 363 | Paulson, Lars (1518) | Lost 1-2 | -181501 |
| 5sealed | 327 | Holmes, Kevin (1554) | Won 2-0 | +191520 |
| 6sealed | 212 | Leite, Evan (1544) | Lost 1-2 | -171503 |
| average opponent: 1502record: 3-3 | new rating: 1503 | |||
| Grand Prix Strasbourg 2007 (Time Spiral block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 147 | Bredt, Klaus-Michael (1662) | Lost 1-2 | -151485 |
| 2block | 206 | Collell, Collell K (1482) | Lost 0-2 | -181467 |
| 3block | 238 | Sebastien, Lege (1465) | Won 2-1 | +181485 |
| 4block | 240 | Raymond, Arthur (1487) | Won 2-0 | +181503 |
| 5block | 208 | Claeye, Thomas (1534) | Lost 0-2 | -181485 |
| 6block | 192 | Legru, Remi (1465) | Won 2-1 | +181503 |
| 7block | 134 | Epp, Dimitri (1502) | Draw 1-1 | 01503 |
| average opponent: 1514record: 3-3-1 | new rating: 1503 | |||