Kopstein, Isaac
Current rating: 1464
Record: 3-5-1
| Grand Prix San Diego 2015 (ORI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 435 | Gilpatrick, Mark (1500) | Lost 1-2 | -181482 |
| 2standard | 437 | Paul, Shaun (1482) | Lost 0-2 | -181464 |
| 3standard | 683 | Newbom, Andy (1465) | Draw 1-1 | 01464 |
| 4standard | 665 | Frapwell, Kolten (1469) | Lost 1-2 | -181446 |
| 5standard | 618 | Downum, Chad (1450) | Won 2-0 | +181464 |
| 6standard | 525 | Ballez, Danny (1463) | Won 2-0 | +181482 |
| 7standard | 408 | Connor, Timothy (1481) | Won 2-0 | +181500 |
| 8standard | 297 | Pomerico, Daniel (1498) | Lost 0-2 | -181482 |
| 9standard | 260 | Anderson, Justin (1464) | Lost 1-2 | -181464 |
| average opponent: 1475record: 3-5-1 | new rating: 1464 | |||