Jacobs, Mark E
Current rating: 1482
Record: 1-2
| Grand Prix Seattle-Tacoma 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 275 | Wong, Manfred (1500) | Won 2-1 | +181518 |
| 2sealed | 191 | Hathaway, Clay (1518) | Lost 1-2 | -181500 |
| 3sealed | 402 | Shinkle, Christopher (1500) | Lost 0-2 | -181482 |
| average opponent: 1506record: 1-2 | new rating: 1482 | |||