Borrero, Mario
Current rating: 1500
Record: 4-4
| Grand Prix San Diego 2015 (ORI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 363 | Russell, Kenneth M (1500) | Won 2-0 | +181518 |
| 2standard | 118 | Tackett, Bret (1430) | Won 2-1 | +161534 |
| 3standard | 219 | Thompson, Bradley (1624) | Lost 1-2 | -161518 |
| 4standard | 325 | Rodriguez, Brian (1507) | Lost 1-2 | -181500 |
| 5standard | 483 | Bond, Robert (1477) | Won 2-0 | +171517 |
| 6standard | 273 | Starbuck, Dean (1520) | Lost 0-2 | -181499 |
| 7standard | 391 | Reitenour, Chris (1510) | Won 2-1 | +191518 |
| 8standard | 269 | Eriksson, Kjell (1529) | Lost 1-2 | -181500 |
| average opponent: 1512record: 4-4 | new rating: 1500 | |||