Fonseca, Oscar
Current rating: 1523
Record: 47-48
Grand Prix Orlando 2014Grand Prix Miami 2015Grand Prix Atlanta 2015Grand Prix Houston 2016Grand Prix Albuquerque 2016Grand Prix Atlanta 2016Grand Prix Orlando 2017Grand Prix Las Vegas 2017 (limited)Grand Prix Las Vegas 2017 (modern)Grand Prix Toronto 2017Grand Prix Atlanta 2017Grand Prix Orlando 2018
| Grand Prix Orlando 2018 (M19 standard) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 184 | Blankenship, Freddie (1351) | Lost 0-2 | -211498 |
| 2standard | 304 | Fernandez, Carlos [USA] (1482) | Won 2-1 | +181516 |
| 3standard | 247 | West, Alexander (1859) | Won 2-0 | +241540 |
| 4standard | 195 | Flynn, Edward (1664) | Lost 1-2 | -161524 |
| 5standard | 283 | Ashford, Steven (1446) | Won 2-0 | +171541 |
| 6standard | 266 | Harms, Michael (1519) | Lost 1-2 | -181523 |
| top | average opponent: 1553record: 3-3 | new rating: 1523 | ||
| Grand Prix Atlanta 2017 (XLN standard) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 190 | Roger, Philippe (1623) | Won 2-1 | +201530 |
| 3standard | 290 | Shelton, Matthew (1534) | Won 2-0 | +181548 |
| 4standard | 46 | Sochurek, Petr (1975) | Lost 1-2 | -111537 |
| 5standard | 137 | Sneed, Alex (1576) | Lost 0-2 | -171520 |
| 6standard | 237 | Skalicky, Stephen (1496) | Won 2-1 | +181538 |
| 7standard | 262 | Sheehan, John (1554) | Won 2-0 | +181556 |
| 8standard | 126 | Jefferson, Corey (1509) | Lost 0-2 | -191537 |
| 9standard | 269 | Ritter, Jeffrey (1555) | Lost 0-2 | -181519 |
| top | average opponent: 1603record: 4-4 | new rating: 1519 | ||
| Grand Prix Toronto 2017 (HOU limited) | starting rating: 1588 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 16 | Boland, Cole (1567) | Lost 0-2 | -191569 |
| 3sealed | 444 | Sadikian, Garabed (1423) | Lost 0-2 | -201549 |
| 4sealed | 476 | Dicaire, Dan (1548) | Lost 1-2 | -181531 |
| 5sealed | 579 | Hevenor, Brock (1379) | Lost 0-2 | -211510 |
| top | average opponent: 1479record: 0-4 | new rating: 1510 | ||
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1649 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 392 | Jones, Bobby (1422) | Lost 1-2 | -221627 |
| 3modern | 1137 | Hicks, Steven (1642) | Lost 1-2 | -181609 |
| 4modern | 1281 | Henson, Dereck (1430) | Lost 0-2 | -211588 |
| top | average opponent: 1498record: 0-3 | new rating: 1588 | ||
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1681 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 91 | Swanson, Erik (1773) | Lost 1-2 | -161665 |
| 3sealed | 654 | Reitbauer, David (1780) | Lost 0-2 | -161649 |
| top | average opponent: 1776record: 0-2 | new rating: 1649 | ||
| Grand Prix Orlando 2017 (AER limited) | starting rating: 1634 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 622 | Lohman, Jacob (1541) | Lost 0-2 | -201614 |
| 4sealed | 822 | Lowe, Thomas (1519) | Won 2-0 | +161630 |
| 5sealed | 748 | Giering, Cole (1494) | Won 2-0 | +161646 |
| 6sealed | 672 | Bornelov, Susanne (1902) | Won 2-1 | +221668 |
| 7sealed | 652 | Sheehan, John (1543) | Lost 0-2 | -201648 |
| 8sealed | 717 | Moore, Joshua (1456) | Won 2-1 | +151663 |
| 9sealed | 674 | Smith, Claude (1543) | Won 2-1 | +161679 |
| 10draft | 679 | Cores, Ari (1746) | Won 2-1 | +191698 |
| 11draft | 764 | Jones, Callahan (1603) | Won 2-0 | +161714 |
| 12draft | 720 | Orellana, Manuel (1798) | Lost 0-2 | -161698 |
| 13draft | 775 | Hahn, William (1931) | Lost 0-2 | -141684 |
| 14draft | 794 | Stechman, Tyler (1629) | Lost 0-2 | -191665 |
| 15draft | 767 | Bell, Clem (1572) | Won 2-1 | +161681 |
| top | average opponent: 1637record: 8-5 | new rating: 1681 | ||
| Grand Prix Atlanta 2016 (KLD limited) | starting rating: 1608 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 835 | Smith, Austin (1528) | Won 2-0 | +171625 |
| 4sealed | 633 | Bolding, Jon (1807) | Won 2-1 | +211646 |
| 5sealed | 555 | Spittle, Don (1528) | Won 2-0 | +161662 |
| 6sealed | 517 | Carter, Dalton (1818) | Lost 1-2 | -151647 |
| 7sealed | 563 | Mantey, Tyler (1791) | Lost 1-2 | -151632 |
| 8sealed | 626 | Sokol, Greg (1874) | Lost 1-2 | -141618 |
| 9sealed | 782 | Bowling, Andrew (1586) | Won 2-1 | +171635 |
| 10draft | 978 | Shoemaker, John (1536) | Lost 1-2 | -191616 |
| 11draft | 889 | Freas, Gerald (1662) | Lost 1-2 | -181598 |
| 12draft | 937 | May, Taylor (1672) | Lost 1-2 | -161582 |
| 13draft | 948 | Baker, Justin (1582) | Won 2-1 | +181600 |
| 14draft | 912 | Palaschak, Brett (1561) | Won 2-0 | +171617 |
| 15draft | 908 | Votava, Alex (1548) | Won 2-1 | +171634 |
| top | average opponent: 1653record: 7-6 | new rating: 1634 | ||
| Grand Prix Albuquerque 2016 (SOI limited) | starting rating: 1595 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 227 | Mayall, Courtney (1525) | Won 2-1 | +171612 |
| 4sealed | 9 | Gunzner, Aaron (1796) | Lost 0-2 | -151597 |
| 5sealed | 144 | Ikerd, David (1535) | Won 2-0 | +171614 |
| 6sealed | 65 | Sato, Rei (2060) | Lost 1-2 | -101604 |
| 7sealed | 166 | Revere, Raine (1540) | Lost 0-2 | -201584 |
| 8sealed | 305 | Jaeger, Tony (1418) | Won 2-0 | +151599 |
| 9sealed | 155 | Tran, Dai (1475) | Won 2-1 | +161615 |
| 10draft | 92 | Lepore, Frank (2005) | Lost 0-2 | -111604 |
| 11draft | 129 | Page, Jonathan (1617) | Won 2-1 | +181622 |
| 12draft | 128 | Rodriguez, Juan (1542) | Won 2-0 | +171639 |
| 13draft | 119 | Fischer, Brandon (1768) | Lost 0-2 | -161623 |
| 14draft | 130 | Eslami, Curtis (1811) | Lost 0-2 | -151608 |
| top | average opponent: 1674record: 6-6 | new rating: 1608 | ||
| Grand Prix Houston 2016 (OGW standard) | starting rating: 1609 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 300 | Ferrebee, Spencer (1517) | Won 2-1 | +171626 |
| 3standard | 35 | Lugo, Gabriel (1538) | Lost 0-2 | -201606 |
| 4standard | 286 | Crisostomo, Anthony (1517) | Lost 1-2 | -191587 |
| 5standard | 508 | Towhill, Tim (1483) | Won 2-0 | +161603 |
| 6standard | 420 | Oliver, Brett (1524) | Won 2-0 | +161619 |
| 7standard | 302 | Rodriguez, Giovanni (1456) | Won 2-0 | +151634 |
| 8standard | 157 | Maney, Tom (1530) | Lost 0-2 | -201614 |
| 9standard | 238 | Chen, Xiang-Yu (1545) | Lost 0-2 | -191595 |
| top | average opponent: 1514record: 4-4 | new rating: 1595 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 326 | Yoon, Joseph (1523) | Won 2-1 | +191514 |
| 3sealed | 173 | Martin, Christopher (1386) | Won 2-0 | +161530 |
| 4sealed | 169 | Paris, Patrick (1590) | Won 2-0 | +191549 |
| 5sealed | 77 | Brown, Edward Adam (1559) | Won 2-0 | +181567 |
| 6sealed | 33 | Mabie, Craig (1660) | Won 2-1 | +201587 |
| 7sealed | 22 | Ma, Jesse (1638) | Won 2-0 | +191606 |
| 8sealed | 9 | Meyer, Benjamin (1746) | Lost 1-2 | -161590 |
| 9sealed | 25 | Machado, Fernando (1588) | Won 2-0 | +181608 |
| 10draft | 82 | Young, Ryan (1911) | Won 2-1 | +231631 |
| 11draft | 35 | Braun-Duin, Brian (2082) | Lost 1-2 | -101621 |
| 12draft | 106 | Wibel, Shane (1681) | Won 2-0 | +191640 |
| 13draft | 53 | McMillion, Cameron (1688) | Lost 1-2 | -171623 |
| 14draft | 54 | Chen, Chao (1869) | Lost 1-2 | -141609 |
| 15draft | 53 | Honigmann, Joshua (1667) | ID | 01609 |
| top | average opponent: 1685record: 9-4-1 | new rating: 1609 | ||
| Grand Prix Miami 2015 (FRF standard) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 389 | Magett, Donald (1500) | Won 2-0 | +191481 |
| 2standard | 77 | Gonzalez, Alessandro (1518) | Lost 0-2 | -171464 |
| 3standard | 539 | Mullen, Collins (1459) | Won 2-1 | +181482 |
| 4standard | 207 | Reyes, Daniel (1667) | Won 2-0 | +211503 |
| 5standard | 108 | Palacios Correa, Luis (1520) | Won 2-1 | +181521 |
| 6standard | 61 | Qadir, Aadil (1680) | Lost 0-2 | -151506 |
| 7standard | 183 | David, Joshua (1621) | Lost 0-2 | -161490 |
| 8standard | 228 | Fuson, Robert (1514) | Won 2-0 | +191509 |
| 9standard | 137 | Murray, Sean (1769) | Lost 0-2 | -141495 |
| top | average opponent: 1583record: 5-4 | new rating: 1495 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 857 | Ivarsson, Aron (1500) | Lost 1-2 | -181482 |
| 2sealed | 1162 | Kerkman, Michael (1465) | Lost 0-2 | -181464 |
| 3sealed | 474 | Saucer, Cale (1394) | Won 2-0 | +161480 |
| 4sealed | 391 | Norsworthy, Jeremy (1483) | Lost 0-0 | -181462 |
| top | average opponent: 1460record: 1-3 | new rating: 1462 | ||