Bachmann, Oscar Mathias
Current rating: 1620
Record: 56-48-2
Grand Prix Stuttgart 2007Grand Prix Buenos Aires 2014Grand Prix Strasbourg 2014Grand Prix Milan 2014Grand Prix Sao Paulo 2015Grand Prix Buenos Aires 2015Grand Prix Santiago 2015Grand Prix Porto Alegre 2015Grand Prix Santiago 2016Grand Prix Porto Alegre 2017Grand Prix Sao Paulo 2017Grand Prix Sao Paulo 2018Grand Prix Sao Paulo 2019
| Grand Prix Sao Paulo 2019 (modern) | starting rating: 1666 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 166 | Pinheiro, Lucas (1500) | Lost 1-2 | -211645 |
| 2modern | 531 | Martins Moreira Neto, Leopoldo (1608) | Lost 1-2 | -191626 |
| 3modern | 613 | Rodrigues Puerta, Andrews (1412) | Won 2-0 | +151641 |
| 4modern | 573 | Oliveira Carneiro, Ulisses (1474) | Lost 1-2 | -211620 |
| top | average opponent: 1498record: 1-3 | new rating: 1620 | ||
| Grand Prix Sao Paulo 2018 (modern) | starting rating: 1689 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 107 | Motta, Ricardo (1446) | Lost 0-2 | -231666 |
| 2modern | 554 | Fonseca Bolonheis, Vinicius (1484) | Won 2-1 | +151681 |
| 3modern | 377 | Gullyt Cardoso, Rafael (1483) | Won 2-0 | +141695 |
| 4modern | 257 | Botelho, Juliano (1511) | Won 2-0 | +151710 |
| 5modern | 227 | Yuen, Man Chun (1535) | Lost 0-2 | -211689 |
| 6modern | 300 | Azevedo, Raphael (1420) | Lost 1-2 | -231666 |
| top | average opponent: 1480record: 3-3 | new rating: 1666 | ||
| Grand Prix Sao Paulo 2017 (modern) | starting rating: 1638 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 107 | Neto, Araken (1452) | Lost 1-2 | -221616 |
| 3modern | 391 | Costa, Caue (1501) | Won 2-1 | +161632 |
| 4modern | 160 | Baptista Lauira, Pedro Artur (1577) | Won 2-0 | +171649 |
| 5modern | 58 | Ancinello, Felipe (1554) | Won 2-1 | +171666 |
| 6modern | 101 | Sifuentes, Francisco (1845) | Lost 1-2 | -151651 |
| 7modern | 118 | Akira Ogashawara, Bruno (1540) | Won 2-0 | +161667 |
| 8modern | 142 | Coquito, Pedro (1554) | Lost 1-2 | -201647 |
| 9modern | 115 | Pinheiro Ataliba Torquato De Souza, Yuri (1536) | Won 2-0 | +161663 |
| 10modern | 148 | De Paula Gomes, Rodrigo (1510) | Won 2-1 | +151678 |
| 11modern | 62 | Guarienti De Oliveira, Bruno (1676) | Lost 0-2 | -181660 |
| 12modern | 92 | Gaullan, Javier (1557) | Won 2-0 | +161676 |
| 13modern | 90 | Rodriguez, Axel Arian (1616) | Lost 0-2 | -191657 |
| 14modern | 85 | Fernandes Canteci, Celso (1534) | Won 2-0 | +161673 |
| 15modern | 77 | Maeda, Thiago (1552) | Won 2-0 | +161689 |
| top | average opponent: 1572record: 9-5 | new rating: 1689 | ||
| Grand Prix Porto Alegre 2017 (AER standard) | starting rating: 1568 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 66 | Rauber Oliveira, Alexander (1515) | Won 2-0 | +171585 |
| 3standard | 119 | Silva, Bruno (1565) | Lost 0-1 | -191566 |
| 4standard | 90 | Fernandes, Patrick (1589) | Won 2-1 | +191585 |
| 5standard | 58 | Pacheco, Marcus (1370) | Lost 1-2 | -221563 |
| 6standard | 157 | Sasso, Mauro (1517) | Won 2-1 | +171580 |
| 7standard | 80 | Fujiyama, Roberto (1499) | Won 2-1 | +171597 |
| 8standard | 58 | Guilherme Colombo, Diego (1549) | Won 2-0 | +171614 |
| 9standard | 25 | Bossaneli Araujo, William (1813) | Lost 0-2 | -151599 |
| 10standard | 48 | Branco, Icaro (1614) | Lost 1-2 | -171582 |
| 11standard | 72 | Velezmoro, Juan Jose (1519) | Lost 1-2 | -201562 |
| 12standard | 79 | Ghiggi, Diego (1503) | Won 2-1 | +171579 |
| 13standard | 73 | Dominguez, Martin Sebastian (1547) | Won 2-0 | +181597 |
| 14standard | 65 | Villela, Artur (1749) | Won 2-0 | +201617 |
| 15standard | 50 | de Melo Miranda, Pedro Henrique (1745) | Won 2-1 | +211638 |
| top | average opponent: 1578record: 9-5 | new rating: 1638 | ||
| Grand Prix Santiago 2016 (KLD standard) | starting rating: 1571 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 15 | Araya Vasquez, Alejandro (1536) | Lost 1-2 | -191552 |
| 4standard | 122 | Rolando, Cristobal (1500) | Won 2-0 | +171569 |
| 5standard | 64 | Gonzalez Iturriaga, Francisco (1428) | Draw 1-1 | -21567 |
| 6standard | 88 | Elizalde, Victor (1645) | Won 2-1 | +191586 |
| 7standard | 59 | Ferry, Sergio (1583) | Won 2-1 | +181604 |
| 8standard | 34 | Lopez, Daniel [ECU] (1492) | Lost 0-0 | -201584 |
| 9standard | 80 | Mira Uribe, Juan Felipe (1676) | Lost 0-2 | -161568 |
| top | average opponent: 1551record: 3-3-1 | new rating: 1568 | ||
| Grand Prix Porto Alegre 2015 (modern) | starting rating: 1571 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 58 | Leite, Ricardo (1541) | Lost 0-1 | -181553 |
| 3modern | 190 | Silva, Marcio (1502) | Lost 1-2 | -191534 |
| 4modern | 261 | Castro Saa, Eduardo (1635) | Won 2-0 | +201554 |
| 5modern | 282 | Giambartolomei, Orlando Luis (1656) | Won 2-1 | +191573 |
| 6modern | 143 | De Souza Costa, Carlos Eduardo (1482) | Won 2-0 | +171590 |
| 7modern | 145 | Andrade, Lucas3349 (1535) | Lost 1-2 | -191571 |
| top | average opponent: 1559record: 3-3 | new rating: 1571 | ||
| Grand Prix Santiago 2015 (ORI limited) | starting rating: 1572 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 179 | Echeverria Heredia, Marcelo (1566) | Won 2-0 | +181590 |
| 3sealed | 28 | Grinblat, Ezequiel (1540) | Won 2-0 | +171607 |
| 4sealed | 21 | Moschini, Esteban (1744) | Won 2-1 | +211628 |
| 5sealed | 14 | Rodriguez Godoy, Juan (1541) | Lost 1-2 | -201608 |
| 6sealed | 61 | Silva, Fabian (1576) | Lost 0-2 | -181590 |
| 7sealed | 60 | Mendez, Victor (1559) | Lost 1-2 | -191571 |
| top | average opponent: 1588record: 3-3 | new rating: 1571 | ||
| Grand Prix Buenos Aires 2015 (DTK standard) | starting rating: 1594 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 67 | Dominguez, Andres Rafael (1528) | Lost 0-2 | -191575 |
| 4standard | 175 | Dominguez, Gonzalo (1771) | Won 2-0 | +221597 |
| 5standard | 56 | Iglesias, Francisco (1542) | Won 2-1 | +171614 |
| 6standard | 33 | Gonzales, Leonel (1556) | Lost 0-2 | -201594 |
| 7standard | 76 | Maimone, Maximiliano (1489) | Draw 1-1 | -11593 |
| 8standard | 99 | Francisco, Lautaro (1474) | Lost 0-1 | -211572 |
| top | average opponent: 1560record: 2-3-1 | new rating: 1572 | ||
| Grand Prix Sao Paulo 2015 (DTK standard) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 209 | Komanski, Nicolas (1638) | Won 2-0 | +211541 |
| 3standard | 211 | Gaete Quezada, Daniel (1645) | Won 2-1 | +201561 |
| 4standard | 20 | Pupo, Vinicius (1557) | Lost 0-2 | -191542 |
| 5standard | 206 | Kurohane, Cesar (1519) | Won 2-0 | +181560 |
| 6standard | 86 | Silva Junior, Claudio Donizete (1555) | Lost 0-2 | -181542 |
| 7standard | 162 | Fischer Fonseca, Joao Gabriel (1582) | Won 2-1 | +191561 |
| 8standard | 72 | Francois Machado, Gabr (1537) | Won 2-1 | +171578 |
| 9standard | 46 | Costa de Queivol, Marcus Vinicius (1572) | Won 2-0 | +181596 |
| 10standard | 24 | Bejgel, Henrique (1654) | Lost 1-2 | -171579 |
| 11standard | 51 | Fonseca Castilho, Vini (1557) | Lost 1-2 | -181561 |
| 12standard | 65 | Andrade da Silva, Luca (1520) | Lost 1-2 | -191542 |
| 13standard | 62 | Souza, Gabriel (1447) | Won 2-1 | +161558 |
| 14standard | 59 | Monteiro Marco, Renato (1551) | Won 2-1 | +181576 |
| 15standard | 49 | Rodrigues, Guilherme Henrique (1577) | Won 2-0 | +181594 |
| top | average opponent: 1565record: 9-5 | new rating: 1594 | ||
| Grand Prix Milan 2014 (modern) | starting rating: 1562 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 27 | De Angelis, Luca (1500) | Lost 1-2 | -191543 |
| 3modern | 378 | Trejtnar, Andreas (1529) | Lost 1-2 | -181525 |
| 4modern | 634 | Careghini, Alessandro (1362) | Won 2-0 | +151540 |
| 5modern | 383 | D'Angelo, Fabio (1454) | Lost 1-2 | -201520 |
| top | average opponent: 1461record: 1-3 | new rating: 1520 | ||
| Grand Prix Strasbourg 2014 (KTK limited) | starting rating: 1454 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 759 | Lindgren, Tommi (1651) | Lost 0-2 | -141440 |
| 3sealed | 1058 | Widawski, Xavier (1485) | Won 2-1 | +181458 |
| 4sealed | 938 | De Georges, Adrien (1520) | Won 2-1 | +201478 |
| 5sealed | 831 | Broion, Valentin (1490) | Won 2-0 | +181496 |
| 6sealed | 760 | Bahr, Peter Michael (1602) | Won 2-1 | +201516 |
| 7sealed | 769 | Neirynck, Branco (1737) | Won 2-1 | +221538 |
| 8sealed | 739 | Bini, Paolo (1839) | Lost 1-2 | -131525 |
| 9sealed | 719 | Dittel, Alexander (1518) | Won 2-0 | +181543 |
| 10draft | 27 | Detecnik, Davor (1832) | Lost 1-2 | -131530 |
| 11draft | 8 | Bouillot, Damien (1626) | Lost 0-2 | -161514 |
| 12draft | 111 | Zorzi, Giulio (1759) | Lost 1-2 | -141500 |
| 13draft | 27 | Bidone, Alessandro (1632) | Won 2-1 | +211521 |
| 14draft | 8 | Tiedtke, Patrick (1561) | Won 2-1 | +181539 |
| 15draft | 73 | Sochurek, Petr (1825) | Won 2-1 | +231562 |
| top | average opponent: 1648record: 9-5 | new rating: 1562 | ||
| Grand Prix Buenos Aires 2014 (BNG standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 106 | Morales, Gonzalo (1553) | Won 2-1 | +201483 |
| 4standard | 34 | Ferreira, Felipe (1535) | Lost 1-2 | -171466 |
| 5standard | 64 | Yoca, Federico (1536) | Lost 0-2 | -171449 |
| 6standard | 129 | Quiroga, Mariano (1527) | Won 2-1 | +201469 |
| 7standard | 142 | Garcia, Eduardo [CHL] (1539) | Won 2-0 | +191488 |
| 8standard | 91 | Cordeiro, Lucas (1536) | Lost 1-2 | -171471 |
| 9standard | 97 | Nunez Fernandez, Rodrigo Antonio (1540) | Lost 0-2 | -171454 |
| top | average opponent: 1538record: 3-4 | new rating: 1454 | ||
| Grand Prix Stuttgart 2007 (LRW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 66 | Risse, Yannick (1439) | Lost 0-2 | -191481 |
| 2sealed | 245 | Ullrich, Frank (1506) | Lost 1-2 | -181463 |
| 3sealed | 287 | Rolf, Peter (1463) | Lost 0-2 | -181445 |
| 4sealed | 310 | Gorecki, Kamil (1449) | Won 2-0 | +181463 |
| top | average opponent: 1464record: 1-3 | new rating: 1463 | ||