John O.,
Current rating: 1538
Record: 5-3-1
| Grand Prix San Diego 2011 (ISD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 433 | Furby, Mats (1594) | Lost 1-2 | -161484 |
| 2sealed | 546 | Benedetti, Michael (1471) | Won 2-0 | +171501 |
| 3sealed | 545 | Jordan, David (1482) | Won 2-0 | +181519 |
| 4sealed | 510 | Cuvelier, John (1638) | Won 2-0 | +201539 |
| 5sealed | 488 | Zheng, Alan (1506) | Won 2-0 | +181557 |
| 6sealed | 429 | Hsu, Daniel (1559) | Lost 0-2 | -181539 |
| 7sealed | 480 | Han, Chang (1528) | Lost 0-2 | -181521 |
| 8sealed | 491 | Searles, James (1470) | Won 2-0 | +171538 |
| 9sealed | 487 | Ruz, Walter (1542) | Draw 1-1 | 01538 |
| average opponent: 1532record: 5-3-1 | new rating: 1538 | |||