O'Donnell, Brendan
Current rating: 1774 (#2967)
Record: 46-30-4 (GP) / 25-24 (professional)
Grand Prix New Jersey 2006Pro Tour Geneva 2007Grand Prix Dallas 2007Grand Prix Columbus 2007Grand Prix Montreal 2007Pro Tour Valencia 2007Grand Prix Philadelphia 2008Grand Prix Los Angeles 2009Grand Prix Boston 2009Grand Prix Tampa 2009Pro Tour San Juan 2010Grand Prix Toronto 2010Pro Tour Philadelphia 2011Grand Prix Boston-Worcester 2012
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1777 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 392 | Jacobson, Joshua (1499) | Lost 0-2 | -231754 |
| 3sealed | 558 | Brecher, Doug (1500) | Won 2-1 | +131767 |
| 4sealed | 278 | Gibson, Stephanie N (1502) | Won 2-0 | +141781 |
| 5sealed | 385 | Ellis, Jason (1546) | Won 2-1 | +131794 |
| 6sealed | 149 | Berrios, Stephen (1650) | Lost 0-2 | -201774 |
| top | average opponent: 1539record: 3-2 | new rating: 1774 | ||
| Pro Tour Philadelphia 2011 (modern) | starting rating: 1792 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 67 | Dembinski, Kyle (1819) | Lost 1-2 | -171775 |
| 2modern | 156 | Bendix Nielsen, Andreas (1491) | Won 2-0 | +131788 |
| 3modern | 145 | Luescher, Sascha (1632) | Won 2-1 | +151803 |
| 4modern | 65 | Zhao, Yisong (1544) | Lost 1-2 | -231780 |
| 5modern | 106 | Cipolleschi, Francesco (1936) | Won 2-0 | +211801 |
| 6draft | 127 | Itou, Kouei (1789) | Lost 1-2 | -181783 |
| 7draft | 8 | Cammilluzzi, Marco (1690) | Won 2-1 | +161799 |
| 8draft | 66 | Ramasami, Anthony (1554) | Lost 1-2 | -221777 |
| top | average opponent: 1682record: 4-4 | new rating: 1777 | ||
| Grand Prix Toronto 2010 (SOM limited) | starting rating: 1724 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 434 | Jensen, Scott (1535) | Won 2-0 | +141738 |
| 4sealed | 418 | Williams, David A (1726) | Lost 0-2 | -181720 |
| 5sealed | 440 | Strahl, John (1503) | Won 2-0 | +141734 |
| 6sealed | 392 | Smith, Kevin (1554) | Won 2-1 | +151749 |
| 7sealed | 368 | Wauer, Carl (1692) | Draw 1-1 | -11748 |
| 8sealed | 357 | Duke, Reid (1733) | Won 2-1 | +181766 |
| 9sealed | 344 | Doran, Marcus (1634) | Won 2-0 | +151781 |
| 10sealed | 335 | Plurkowski, Luke (1745) | Won 0-0 | +181799 |
| 11draft | 47 | Cox, Patrick (1865) | Lost 1-2 | -171782 |
| 12draft | 69 | Marsan, Thomas (1579) | Won 2-0 | +141796 |
| 13draft | 65 | Gottlieb, Bryan (1768) | Won 2-1 | +181814 |
| 14draft | 25 | Drebsky, David (1686) | Won 2-0 | +151829 |
| 15draft | 54 | Cox, Patrick (1892) | Lost 0-2 | -161813 |
| 16draft | 40 | Rigby, Neil (1695) | Lost 0-2 | -211792 |
| top | average opponent: 1686record: 9-4-1 | new rating: 1792 | ||
| Pro Tour San Juan 2010 (Zendikar block) | starting rating: 1726 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 30 | Lybaert, Marijn (1878) | Lost 1-2 | -151711 |
| 2block | 149 | Pappaterra, Pedro (1467) | Won 2-0 | +141725 |
| 3block | 83 | Vicente Ferrer, Ricardo (1584) | Lost 0-2 | -211704 |
| 4block | 165 | Bennett, Michael (1449) | Won 2-1 | +141718 |
| 5block | 113 | Khodasevich, Egor (1533) | Won 2-1 | +141732 |
| 6draft | 100 | Marroquin, Jonathan Hervey (1531) | Won 2-0 | +151747 |
| 7draft | 116 | Golliher, Jason (1723) | Won 2-0 | +171764 |
| 8draft | 29 | Kolos, John (1877) | Won 2-1 | +201784 |
| 9draft | 61 | Shackett, Thomas (1751) | Won 2-1 | +181802 |
| 10draft | 64 | Damo da Rosa, Paulo Vitor (2034) | Lost 0-2 | -141788 |
| 11draft | 20 | Snepvangers, Bram (1866) | Lost 1-2 | -171771 |
| 12block | 39 | Scott-Vargas, Luis (1939) | Lost 1-2 | -151756 |
| 13block | 35 | Tuomi, Sami (1891) | Lost 0-2 | -151741 |
| 14block | 52 | Bateman, Christian (1662) | Won 2-0 | +161757 |
| 15block | 42 | Thompson, Gerry (1835) | Lost 1-2 | -161741 |
| 16block | 56 | Enevoldsen, Thomas (1796) | Lost 0-2 | -171724 |
| top | average opponent: 1738record: 8-8 | new rating: 1724 | ||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1724 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 147 | Burks, Brandon (1580) | Won 2-1 | +151739 |
| 4sealed | 12 | Cone, Robert (1554) | Lost 0-2 | -211718 |
| 5sealed | 111 | Bowen, Leonard (1444) | Won 2-1 | +131731 |
| 6sealed | 98 | Lundquist, Ben (1885) | Lost 1-2 | -151716 |
| 7sealed | 148 | Osyda, Eric (1548) | Won 2-0 | +151731 |
| 8sealed | 60 | Postlethwait, William (1685) | Lost 1-2 | -191712 |
| 9sealed | 120 | Carroll, Brendan (1528) | Won 2-0 | +141726 |
| top | average opponent: 1603record: 4-3 | new rating: 1726 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1717 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 450 | Nakamura, Shuhei (1976) | Lost 1-2 | -141703 |
| 5sealed | 489 | Reed, Kevin (1536) | Won 2-1 | +151718 |
| 6sealed | 493 | Meier, Dave (1586) | Lost 1-2 | -201698 |
| 7sealed | 514 | Chamberlain, Ben (1483) | Draw 1-1 | -41694 |
| 8sealed | 505 | Ogrydziak, Jon (1506) | Won 2-0 | +141708 |
| 9sealed | 471 | Thatcher, Kevin (1555) | Won 2-1 | +161724 |
| top | average opponent: 1607record: 3-2-1 | new rating: 1724 | ||
| Grand Prix Los Angeles 2009 (extended) | starting rating: 1734 | |||
| round | table | opponent (rating) | result | Δrating |
| 3extended | 139 | Vines, Matthew (1520) | Won 2-0 | +141748 |
| 4extended | 75 | Castor, Kenny (1657) | Lost 1-2 | -201728 |
| 5extended | 114 | Yam, Philip (1592) | Won 2-1 | +161744 |
| 6extended | 33 | Williams, Erik L (1462) | Lost 0-2 | -231721 |
| 7extended | 121 | Seaver, Ryan (1612) | Won 2-1 | +161737 |
| 8extended | 83 | Siow, Lucas (1602) | Lost 0-2 | -201717 |
| top | average opponent: 1574record: 3-3 | new rating: 1717 | ||
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1590 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 166 | Vaisberg, Elias (1548) | Won 2-1 | +171607 |
| 3extended | 11 | Thornton, Matthew J (1536) | Won 2-1 | +171624 |
| 4extended | 38 | Sauer, Scott R (1517) | Won 2-1 | +161640 |
| 5extended | 45 | Neary, Nicholas (1832) | Draw 1-1 | +31643 |
| 6extended | 34 | Martell, Tom (1741) | Lost 1-2 | -161627 |
| 7extended | 86 | Nielsen, Bill (1504) | Won 2-0 | +161643 |
| 8extended | 45 | Narchus, Nick J (1564) | Won 2-1 | +161659 |
| 9extended | 29 | Zadrejko, Jonathan (1565) | Won 2-0 | +161675 |
| 10extended | 14 | Fabiano, Gerard (1690) | Draw 1-1 | +11676 |
| 11extended | 33 | Rodriguez, Alex (1618) | Won 2-1 | +171693 |
| 12extended | 18 | Hall, Zack (1923) | Lost 0-2 | -141679 |
| 13extended | 34 | Nachtigall, Jaroslav (1552) | Won 2-1 | +161695 |
| 14extended | 22 | Imperiale, Jason (1869) | Won 2-1 | +211716 |
| 15extended | 14 | Rasmussen, Ben (1728) | Won 2-1 | +181734 |
| top | average opponent: 1656record: 10-2-2 | new rating: 1734 | ||
| Pro Tour Valencia 2007 (extended) | starting rating: 1613 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 19 | Jones, Craig (1768) | Won 2-0 | +211634 |
| 2extended | 92 | Garcia Copete, David (1825) | Won 2-1 | +211655 |
| 3extended | 51 | Gatica, Miguel (1605) | Lost 1-2 | -181637 |
| 4extended | 64 | Ljungberg, William (1838) | Lost 1-2 | -151622 |
| 5extended | 76 | Boggemes, Kyle (1541) | Lost 1-2 | -191603 |
| 6extended | 164 | Godinez Estrada, Gerardo (1880) | Lost 1-2 | -131590 |
| 7extended | 148 | Jackson, Jeremy (1464) | Lost 1-2 | -211569 |
| 8extended | 149 | Tormos, Ervin (1685) | Won 2-0 | +201589 |
| 9extended | 131 | Porojan, Raul (1669) | Won 2-0 | +201609 |
| 10extended | 93 | Krastin, Christian (1536) | Lost 1-2 | -191590 |
| top | average opponent: 1681record: 4-6 | new rating: 1590 | ||
| Grand Prix Montreal 2007 (Time Spiral block) | starting rating: 1598 | |||
| round | table | opponent (rating) | result | Δrating |
| 3block | 52 | Muraca, Nick (1560) | Lost 1-2 | -191579 |
| 4block | 190 | Hennessey, Jamie (1516) | Lost 1-2 | -191560 |
| 5block | 243 | Bridgeforth Jr, Anthony C (1563) | Won 2-1 | +181578 |
| 6block | 178 | Hodgson, Craig (1507) | Won 2-1 | +171595 |
| 7block | 100 | Dunning, Edward (1569) | Won 2-1 | +171612 |
| 8block | 80 | Afshar, Sina (1554) | Won 0-0 | +171629 |
| 9block | 32 | Herold, Jim (1728) | Lost 0-0 | -161613 |
| top | average opponent: 1571record: 4-3 | new rating: 1613 | ||
| Grand Prix Columbus 2007 (legacy) | starting rating: 1650 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 194 | roberts, michael w (1518) | Lost 1-2 | -211629 |
| 3legacy | 210 | Horner, Eric (1500) | Lost 1-2 | -201609 |
| 4legacy | 289 | Gaudard, Jason (1612) | Lost 1-2 | -181591 |
| 5legacy | 332 | Kwan, Lung (1463) | Lost 1-2 | -201571 |
| 6legacy | 331 | priar, john m (1448) | Won 2-0 | +161587 |
| 7legacy | 269 | Hawley, Ryan (1464) | Won 2-1 | +151602 |
| 8legacy | 218 | Evans, Matt (1484) | Won 2-0 | +161618 |
| 9legacy | 175 | Lynn, Michael (1500) | Lost 0-2 | -201598 |
| top | average opponent: 1499record: 3-5 | new rating: 1598 | ||
| Grand Prix Dallas 2007 (extended) | starting rating: 1635 | |||
| round | table | opponent (rating) | result | Δrating |
| 3extended | 19 | Craddock, William (1520) | Won 0-0 | +161651 |
| 4extended | 5 | Davis, Jim (1515) | Lost 0-2 | -201631 |
| 5extended | 96 | Chonlatanon, Mek (1537) | Won 2-1 | +161647 |
| 6extended | 87 | Stavola, Kate (1752) | Won 2-0 | +201667 |
| 7extended | 56 | Burton, Hunter (1497) | Lost 0-2 | -211646 |
| 8extended | 89 | Tamblyn, Alex (1537) | Won 2-0 | +161662 |
| 9extended | 35 | Coimbra, Andre (1997) | Lost 1-2 | -121650 |
| top | average opponent: 1622record: 4-3 | new rating: 1650 | ||
| Pro Tour Geneva 2007 (PLC draft) | starting rating: 1512 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 115 | Fiorillo, John (1857) | Won 2-0 | +241536 |
| 2draft | 39 | Langer, Tomas (1681) | Won 2-1 | +201556 |
| 3draft | 22 | Mueller, Andre (1606) | Lost 0-2 | -171539 |
| 4draft | 120 | Ikeda, Tsuyoshi (1890) | Won 2-0 | +251564 |
| 5draft | 159 | Mitamura, Kazuya (1830) | Won 2-1 | +221586 |
| 6draft | 21 | Ochoa, David (1685) | Won 2-1 | +201606 |
| 7draft | 43 | Oomens, Wessel (1959) | Lost 0-2 | -121594 |
| 8draft | 26 | Perthuis, Thibault (1725) | Lost 1-2 | -151579 |
| 9draft | 33 | Wright, Stuart (1963) | Won 2-1 | +241603 |
| 10draft | 58 | van Heeswijk, Roel (1937) | Won 2-1 | +241627 |
| 11draft | 58 | Brucker, David (2113) | Lost 1-2 | -101617 |
| 12draft | 41 | Black, Samuel (1652) | Won 2-1 | +191636 |
| 13draft | 15 | Mihara, Makihito (2108) | Lost 1-2 | -101626 |
| 14draft | 15 | Hoaen, Rich (2033) | Lost 0-2 | -111615 |
| 15draft | 41 | Lippincott, Don (1740) | Won 2-0 | +201635 |
| top | average opponent: 1852record: 9-6 | new rating: 1635 | ||
| Grand Prix New Jersey 2006 (TSP limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 98 | Herberholz, Mark (1928) | Lost 0-2 | -111489 |
| 5sealed | 90 | Sussino, Tim (1561) | Won 2-1 | +201509 |
| 6sealed | 42 | Levin, Julian (1553) | Lost 0-2 | -181491 |
| 7sealed | 112 | Cogley, Nick (1594) | Lost 1-2 | -161475 |
| 8sealed | 149 | Rising, Carl (1516) | Won 2-0 | +191494 |
| 9sealed | 103 | Smith, Eric (1480) | Won 2-1 | +181512 |
| top | average opponent: 1605record: 3-3 | new rating: 1512 | ||