Diaz, Oscar
Current rating: 1391
Record: 11-20-1
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1367 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 306 | Reese, Charles (1616) | Lost 1-2 | -141353 |
| 2modern | 310 | Lelacheur, Joshua (1482) | Won 2-1 | +201373 |
| 3modern | 233 | Strobel, Jake (1561) | Won 2-0 | +221395 |
| 4modern | 236 | Kurtz, Joshua (1508) | Won 2-0 | +201415 |
| 5modern | 88 | Araujo, Renato Henrique (1598) | Lost 0-2 | -151400 |
| 6modern | 267 | Christy, David (1688) | Lost 0-2 | -131387 |
| 7modern | 214 | Falcon, Roberto (1497) | Won 2-0 | +201407 |
| 8modern | 145 | Jacobsen, Gray (1480) | Lost 0-2 | -161391 |
| top | average opponent: 1554record: 4-4 | new rating: 1391 | ||
| Grand Prix Atlanta 2018 (modern) | starting rating: 1388 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 21 | Gay, Kevin (1437) | Won 2-1 | +181406 |
| 2modern | 292 | Arnott, Jeremy (1493) | Lost 0-2 | -161390 |
| 3modern | 473 | Coker, Carson (1464) | Won 2-1 | +191409 |
| 4modern | 462 | Register, Clifford (1547) | Lost 1-2 | -151394 |
| 5modern | 443 | Tanzosch, Nathan (1501) | Lost 1-2 | -161378 |
| 6modern | 501 | Orcutt, Jonathan (1484) | Lost 1-2 | -161362 |
| 7modern | 465 | Elliott, Andrew (1551) | Won 2-1 | +211383 |
| 8modern | 386 | Saunooke, Rick (1464) | Lost 1-2 | -161367 |
| top | average opponent: 1493record: 3-5 | new rating: 1367 | ||
| Grand Prix Orlando 2018 (M19 standard) | starting rating: 1427 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 83 | Velazquez, Diego (1583) | Won 2-0 | +211448 |
| 2standard | 142 | Torres, Juan (1501) | Won 2-1 | +191467 |
| 3standard | 109 | McCord, Christopher (1511) | Lost 0-2 | -171450 |
| 4standard | 234 | Maeba, Hideaki (1819) | Lost 1-2 | -121438 |
| 5standard | 321 | Lutz, Chaz (1497) | Lost 1-2 | -171421 |
| 6standard | 317 | Oberkreser, Adam (1484) | Lost 0-2 | -171404 |
| 7standard | 300 | Rossheim, Barry (1471) | Lost 0-2 | -161388 |
| top | average opponent: 1552record: 2-5 | new rating: 1388 | ||
| Grand Prix Atlanta 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 230 | Slone, William (1502) | Lost 0-2 | -181482 |
| 2standard | 481 | Long, Amy (1483) | Lost 1-2 | -181464 |
| 3standard | 603 | Foxton, Thomas (1465) | Lost 0-2 | -181446 |
| 4standard | 633 | Tyson, Ryan (1446) | Won 2-0 | +181464 |
| 5standard | 563 | Edmondson, Jeremy (1463) | Won 2-0 | +181482 |
| 6standard | 504 | Davis, Matthew 2 (1481) | Lost 0-2 | -181464 |
| 7standard | 486 | Ahmed, Fahim (1464) | Draw 1-1 | 01464 |
| 8standard | 427 | Tanner, Chris (1431) | Lost 0-2 | -191445 |
| 9standard | 382 | Hermann-Wilmarth, Arden (1424) | Lost 0-2 | -181427 |
| top | average opponent: 1462record: 2-6-1 | new rating: 1427 | ||