Brenes, Jose Manuel
Current rating: 1479
Record: 3-4
| Grand Prix Costa Rica 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 46 | Coto Grosser, Daniel (1500) | Lost 0-2 | -181482 |
| 3sealed | 144 | Rojas, Alejandro (1481) | Won 2-0 | +181500 |
| 4sealed | 115 | Moice, William (1482) | Won 2-0 | +181518 |
| 5sealed | 100 | Quesada, Juan (1483) | Won 2-1 | +171535 |
| 6sealed | 94 | Sanabria, Jose Gabriel (1501) | Lost 0-2 | -191516 |
| 7sealed | 89 | Vega, Juan Pablo (1465) | Lost 1-2 | -191497 |
| 8sealed | 99 | Barreto, Ricardo (1499) | Lost 0-2 | -181479 |
| average opponent: 1487record: 3-4 | new rating: 1479 | |||