Madrigal, Julio
Current rating: 1472
Record: 8-10-1
| Grand Prix Costa Rica 2016 (SOI standard) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 3 | Villarraga Ossa, Junes Abdul (1584) | Won 2-1 | +191537 |
| 3standard | 44 | Son Ibanez, Luis Ernesto (1588) | Lost 1-2 | -171520 |
| 4standard | 119 | Villalobos, David (1500) | Won 2-0 | +181538 |
| 5standard | 97 | Ricco, Tara (1436) | Won 2-1 | +161554 |
| 6standard | 45 | Vargas, Jose (1515) | Won 2-1 | +171571 |
| 7standard | 20 | Rong Feng, Jun (1537) | Draw 1-1 | 01571 |
| 8standard | 32 | Arauz, Joel Enrique (1572) | Lost 1-2 | -181553 |
| 9standard | 58 | Alfaro, Luis Mauricio (1551) | Won 2-1 | +181571 |
| 10standard | 32 | Botis, Juan Carlos (1754) | Lost 0-2 | -151556 |
| 11standard | 54 | Byrd, Kalab (1608) | Lost 1-2 | -171539 |
| 12standard | 66 | Allende, Luis (1507) | Lost 1-2 | -191520 |
| 13standard | 70 | Segovia, Cesar (1583) | Lost 0-0 | -171503 |
| 14standard | 69 | Arellano, Fidel (1546) | Lost 0-2 | -171486 |
| 15standard | 65 | Breitman, Alan (1705) | Lost 0-2 | -141472 |
| average opponent: 1570record: 5-8-1 | new rating: 1472 | |||
| Grand Prix Costa Rica 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 54 | Lizano, Daniel (1482) | Won 2-1 | +181518 |
| 4sealed | 67 | Santana, Jorge (1536) | Won 2-1 | +181536 |
| 5sealed | 71 | Fournier, Alejandro (1552) | Won 2-0 | +181554 |
| 6sealed | 41 | Searles, James (1545) | Lost 0-2 | -181536 |
| 7sealed | 42 | Williams, Benjamin (1532) | Lost 0-2 | -181518 |
| average opponent: 1530record: 3-2 | new rating: 1518 | |||