De Leon Castillo, Joseph Joaquin
Current rating: 1680
Record: 17-9-2
| Grand Prix Costa Rica 2016 (SOI standard) | starting rating: 1600 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 71 | Quesada, Vladimir (1500) | Won 2-0 | +161616 |
| 2standard | 92 | Donato, Marino (1695) | Won 2-1 | +191635 |
| 3standard | 69 | Ulanov, Denis (1748) | Won 2-1 | +201655 |
| 4standard | 32 | Wescoe, Craig (1923) | Won 2-0 | +231678 |
| 5standard | 7 | Buchholz, Evan (1692) | Won 2-1 | +191697 |
| 6standard | 4 | Flores Silva, Mario Alejandro (1916) | Draw 1-1 | +31700 |
| 7standard | 11 | Betesh, Ralph (2057) | Lost 0-2 | -111689 |
| 8standard | 25 | Burkhart, Corey (1978) | Lost 0-2 | -131676 |
| 9standard | 50 | Barrientos Ochoa, Claudio (1846) | Won 2-0 | +211697 |
| 10standard | 34 | Calcano, Christian (1934) | Draw 1-1 | +41701 |
| 11standard | 53 | Hoffeld, Joshua (1768) | Lost 1-2 | -171684 |
| 12standard | 65 | Segovia, Cesar (1599) | Won 2-0 | +171701 |
| 13standard | 50 | Lee, Brian (1757) | Won 0-0 | +191720 |
| 14standard | 35 | Sanjur, Omar (1605) | Lost 0-2 | -201700 |
| 15standard | 47 | Piedra Marin, Kevin (1590) | Lost 1-2 | -201680 |
| average opponent: 1774record: 8-5-2 | new rating: 1680 | |||
| Grand Prix Costa Rica 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1 | Alvarez Sanchez, Eduardo Jose (1500) | Won 2-0 | +181518 |
| 3sealed | 36 | Iramain, Jorge (1568) | Won 2-0 | +191537 |
| 4sealed | 1 | Vega, Juan Pablo (1518) | Won 2-1 | +181555 |
| 5sealed | 7 | Ruiz, Henry A (1551) | Won 2-0 | +171572 |
| 6sealed | 2 | Solorzano, Fernando (1505) | Lost 1-2 | -191553 |
| 7sealed | 18 | Castro Mahoney, Roberto (1654) | Won 2-0 | +201573 |
| 8sealed | 5 | Sharfman, David (1751) | Lost 0-2 | -151558 |
| 9draft | 6 | Lee, Jackie (1832) | Lost 1-2 | -131545 |
| 10draft | 14 | Vargas, Diego (1465) | Won 2-1 | +171562 |
| 11draft | 25 | Fish, Darryll (1715) | Won 2-1 | +211583 |
| 12draft | 11 | Ruiz, Henry A (1573) | Won 2-0 | +171600 |
| 13draft | 6 | Virula, Christopher (1577) | Won 2-1 | +181618 |
| 14draft | 22 | Arroyo, Julio (1613) | Lost 0-2 | -181600 |
| average opponent: 1602record: 9-4 | new rating: 1600 | |||