zarza, Omar Z
Current rating: 1432
Record: 4-8
| Grand Prix San Diego 2015 (ORI standard) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 268 | Beleche-Gonzalez, Itza (1500) | Won 2-0 | +191467 |
| 2standard | 308 | Horwitz, Lucas (1569) | Lost 0-2 | -161451 |
| 3standard | 409 | Servantes, Lucas (1426) | Won 2-1 | +171468 |
| 4standard | 283 | Imano, Terry (1486) | Won 2-1 | +191487 |
| 5standard | 262 | Wilson, Chase (1440) | Lost 0-2 | -191468 |
| 6standard | 388 | Punsalan, Gilbert (1502) | Lost 0-2 | -181450 |
| 7standard | 363 | Pham, John (1440) | Lost 0-2 | -181432 |
| average opponent: 1480record: 3-4 | new rating: 1432 | |||
| Grand Prix Santiago 2013 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 97 | Gavilondo, Nicolas (1497) | Lost 0-2 | -181482 |
| 4modern | 127 | Arenas, Alfredo (1483) | Won 2-0 | +181500 |
| 5modern | 152 | Igor P., (1535) | Lost 0-2 | -171483 |
| 6modern | 183 | Bachmann, Eduardo (1516) | Lost 0-2 | -181465 |
| 7modern | 213 | Lecaros Arevalo, Carlos Alberto (1503) | Lost 0-2 | -171448 |
| average opponent: 1507record: 1-4 | new rating: 1448 | |||