Piedra Marin, Kevin
Current rating: 1610
Record: 7-3-4
| Grand Prix Costa Rica 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 30 | Aubin, Maxime (1534) | Won 2-0 | +191519 |
| 3standard | 102 | Ramos, Ismael (1602) | Won 2-1 | +191538 |
| 4standard | 31 | Sasso, Mauro (1535) | Won 2-1 | +181556 |
| 5standard | 3 | Solano Cantillo, Jorge Luis (1616) | Won 2-1 | +191575 |
| 6standard | 2 | Alvarado, Saul (1875) | Lost 0-2 | -131562 |
| 7standard | 28 | Sui, Xin (1997) | Won 2-1 | +261588 |
| 8standard | 13 | Gerlock, Alex (1856) | Won 2-1 | +231611 |
| 9standard | 4 | Buchholz, Evan (1723) | Draw 1-1 | +21613 |
| 10standard | 10 | Solorzano, Fernando (1753) | Draw 1-1 | +21615 |
| 11standard | 17 | Stern, Jon (1866) | Lost 1-2 | -131602 |
| 12standard | 35 | Angeles, Luis (1635) | Draw 1-1 | 01602 |
| 13standard | 34 | Lopez, Rodrigo (1951) | Draw 0-0 | +61608 |
| 14standard | 39 | Espino, Alejandro (1570) | Lost 1-2 | -181590 |
| 15standard | 47 | De Leon Castillo, Joseph Joaquin (1700) | Won 2-1 | +201610 |
| average opponent: 1729record: 7-3-4 | new rating: 1610 | |||