Olcha, david
Current rating: 1518
Record: 4-3-1
| Grand Prix Oakland 2013 (M14 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 348 | Boyuton, Damon (1500) | Won 2-0 | +181518 |
| 2sealed | 34 | Mercado, Guillermo (1521) | Lost 0-2 | -181500 |
| 3sealed | 370 | Berndt, Steven (1499) | Draw 1-1 | 01500 |
| 4sealed | 251 | Farivar, Omid (1500) | Won 1-0 | +181518 |
| 5sealed | 337 | Dupont, Pierre-Alain (1518) | Won 2-0 | +181536 |
| 6sealed | 88 | Ramias, Jason (1569) | Lost 0-2 | -171519 |
| 7sealed | 319 | Uy, John (1501) | Won 2-0 | +171536 |
| 8sealed | 219 | Kalugin, Andrey (1537) | Lost 0-2 | -181518 |
| average opponent: 1518record: 4-3-1 | new rating: 1518 | |||