Alferez, Marcelo
Current rating: 1507
Record: 8-8
| Grand Prix San Diego 2015 (ORI standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 365 | Sickles, Sean (1500) | Won 2-0 | +191500 |
| 2standard | 234 | Drews, Ken (1493) | Lost 1-2 | -181482 |
| 3standard | 410 | Guo, Michelle (1394) | Won 2-1 | +161498 |
| 4standard | 445 | Cahalan, Liam (1525) | Lost 1-2 | -171481 |
| 5standard | 516 | Reis, Matthew (1628) | Won 2-1 | +201501 |
| 6standard | 406 | Boyko, Derek K (1565) | Lost 1-2 | -171484 |
| 7standard | 351 | Contreras, Zane (1503) | Won 2-0 | +191503 |
| 8standard | 234 | Nguyen, James (1753) | Lost 1-2 | -141489 |
| 9standard | 256 | chen, yinzhe (1480) | Won 2-1 | +181507 |
| average opponent: 1538record: 5-4 | new rating: 1507 | |||
| Grand Prix Los Angeles 2014 (KTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 184 | Kirk, Dakota (1500) | Lost 1-2 | -181482 |
| 2standard | 517 | Golden, Calvin (1463) | Lost 0-2 | -181464 |
| 3standard | 803 | Pepper, Lindsay (1464) | Won 2-0 | +181482 |
| 4standard | 715 | Lucero, Crisrael (1484) | Won 2-0 | +181500 |
| 5standard | 542 | Terre, Joseph (1502) | Won 2-1 | +181518 |
| 6standard | 459 | Alonzo, Fabian (1500) | Lost 0-2 | -191499 |
| 7standard | 420 | Stickney, Kameron (1499) | Lost 1-2 | -181481 |
| average opponent: 1487record: 3-4 | new rating: 1481 | |||