MacMurdo, Walker
Current rating: 1758 (#3507)
Record: 51-31-7 (GP) / 3-5 (professional)
| Grand Prix Cleveland 2019 (RNA limited) | starting rating: 1791 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 83 | Bigcraft, Zackary (1500) | Lost 1-2 | -231768 |
| 2sealed | 344 | Spencer, Jeffrey (1526) | Won 2-1 | +141782 |
| 3sealed | 430 | Sandahl, Bryan (1497) | Lost 1-2 | -241758 |
| top | average opponent: 1508record: 1-2 | new rating: 1758 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1818 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 340 | Connelly, Joseph (1500) | Won 2-0 | +121830 |
| 2standard | 253 | Onions, James (1519) | Won 1-0 | +131843 |
| 3standard | 78 | Stevenson, James (1529) | Lost 1-2 | -241819 |
| 4standard | 415 | Bell, Rebecca (1585) | Won 2-0 | +141833 |
| 5standard | 192 | McReynolds, Allen (1527) | Won 2-1 | +131846 |
| 6standard | 92 | Chan, Robbie (1638) | Lost 0-2 | -221824 |
| 7standard | 180 | Fyfe, Casey (1592) | Won 2-0 | +141838 |
| 8standard | 206 | Wall, Matt (1548) | Lost 0-2 | -231815 |
| 9standard | 268 | Fincher, Lee (1487) | Lost 0-2 | -241791 |
| top | average opponent: 1547record: 5-4 | new rating: 1791 | ||
| Grand Prix Portland 2016 (EMN standard) | starting rating: 1738 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 171 | St. Pierre, Brandon (1518) | Won 2-1 | +141752 |
| 3standard | 45 | Blum, Tyler (1800) | Lost 0-2 | -181734 |
| 4standard | 275 | Wong, Gary (1920) | Won 2-1 | +221756 |
| 5standard | 293 | Chernov, Eugene (1515) | Won 2-0 | +141770 |
| 6standard | 61 | Ziemba, Brian (1840) | Won 2-0 | +191789 |
| 7standard | 43 | Woolley, Ian (1550) | Won 2-0 | +141803 |
| 8standard | 16 | Lui, Timothy (1606) | Won 2-1 | +141817 |
| 9standard | 31 | Stern, Jon (1977) | Draw 0-0 | +31820 |
| 10standard | 22 | Cohen, Justin (1956) | Won 2-0 | +201840 |
| 11standard | 12 | Mick, Maxwell (1659) | Lost 0-2 | -211819 |
| 12standard | 32 | Sinnott, Timothy (1711) | Won 2-1 | +161835 |
| 13standard | 24 | Peters, Stephen (1823) | Lost 1-2 | -181817 |
| 14standard | 53 | Sullano, Andrew (1886) | Draw 1-1 | +11818 |
| 15standard | 69 | Chin, Ricky (1815) | Draw 1-1 | 01818 |
| top | average opponent: 1755record: 8-3-3 | new rating: 1818 | ||
| Grand Prix Vancouver 2016 (OGW limited) | starting rating: 1693 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 317 | Cardinal, Anthony (1500) | Won 2-1 | +141707 |
| 2sealed | 414 | Carlson, Anders (1516) | Won 2-0 | +151722 |
| 3sealed | 250 | Fang, Percy (1837) | Won 0-0 | +201742 |
| 4sealed | 73 | Kirkland, Matt (1733) | Won 2-0 | +181760 |
| 5sealed | 33 | Boutet, Patrick (1618) | Draw 1-1 | -31757 |
| 6sealed | 43 | Cole, Nathan (1715) | Won 2-1 | +181775 |
| 7sealed | 20 | Wlasichuk, Michael (1558) | Won 2-1 | +141789 |
| 8sealed | 11 | Stocks, Jonathan (1734) | Won 2-0 | +171806 |
| 9sealed | 5 | Weitz, Benjamin (2134) | Lost 1-2 | -131793 |
| 10draft | 7 | Taylor, Clint (1773) | Lost 0-2 | -181775 |
| 11draft | 7 | Ristau, Robert (1602) | Lost 0-2 | -211754 |
| 12draft | 7 | Nguyen, Thanh (1574) | Lost 1-2 | -211733 |
| 13draft | 35 | Yeliga, Craig (1459) | Won 1-0 | +131746 |
| 14draft | 57 | McLeod, James (1478) | Lost 1-2 | -231723 |
| 15draft | 56 | Davies, Karen (1526) | Won 2-0 | +151738 |
| top | average opponent: 1651record: 9-5-1 | new rating: 1738 | ||
| Grand Prix Oakland 2016 (BFZ standard) | starting rating: 1566 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 199 | Anshutz, Brittany (1500) | Won 2-0 | +171583 |
| 4standard | 117 | Sullano, Andrew (1818) | Won 2-1 | +221605 |
| 5standard | 73 | Davis, Kade (1530) | Lost 1-2 | -191586 |
| 6standard | 170 | Mulcahy, Luke (1922) | Won 2-0 | +241610 |
| 7standard | 124 | Black, Samuel (2043) | Won 2-0 | +251635 |
| 8standard | 37 | Wijaya, Vidianto (2024) | Won 2-1 | +251660 |
| 9standard | 37 | Seck, Ben (1831) | Lost 1-2 | -151645 |
| 10standard | 75 | Yu, Jarvis (1994) | Won 2-1 | +241669 |
| 11standard | 44 | Schlom, Christoph (1622) | Lost 1-2 | -191650 |
| 12standard | 110 | Nguyen, Paul (1619) | Won 2-0 | +181668 |
| 13standard | 70 | Weller-Gordon, Brian (1768) | Won 2-1 | +201688 |
| 14standard | 47 | Araujo, Spenser (1661) | Lost 0-2 | -191669 |
| 15standard | 44 | Stark, Ben S (1999) | Won 2-1 | +241693 |
| top | average opponent: 1795record: 9-4 | new rating: 1693 | ||
| Grand Prix Seattle-Tacoma 2015 (legacy) | starting rating: 1613 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 522 | Powell, Josh (1449) | Lost 1-2 | -211592 |
| 2legacy | 636 | Swaney, Andrew (1366) | Lost 1-2 | -221570 |
| 3legacy | 852 | Walbridge, Shaun (1462) | Won 2-1 | +161586 |
| 4legacy | 783 | Dougherty, Daniel (1467) | Lost 1-2 | -201566 |
| top | average opponent: 1436record: 1-3 | new rating: 1566 | ||
| Pro Tour Gatecrash (GTC standard) | starting rating: 1644 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 4 | Dalgaard, Dennis (1638) | Lost 0-2 | -181626 |
| 2draft | 45 | Szpakowski, Alexis (1484) | Won 2-1 | +151641 |
| 3draft | 67 | West, Alexander (1802) | Lost 1-2 | -151626 |
| 4standard | 95 | Thomason, Timothy (1813) | Lost 1-2 | -151611 |
| 5standard | 137 | Bogner, Ryan (1683) | Lost 1-2 | -161595 |
| 6standard | 150 | Anderson, Marc (1575) | Won 2-0 | +171612 |
| 7standard | 131 | Cusenza, Vincenzo (1473) | Won 2-0 | +161628 |
| 8standard | 105 | Gatica, Miguel (1832) | Lost 1-2 | -151613 |
| top | average opponent: 1662record: 3-5 | new rating: 1613 | ||
| Grand Prix Sydney 2013 (RTR limited) | starting rating: 1711 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 29 | Lioznov, Michael (1557) | Won 2-1 | +151726 |
| 5sealed | 30 | van Ravenzwaaij, Don (1738) | Lost 1-2 | -181708 |
| 6sealed | 75 | Harris, Colin (1605) | Lost 0-2 | -201688 |
| 7sealed | 71 | Ophel, Alex (1532) | Won 2-1 | +161704 |
| 8sealed | 81 | Rayner, Hugh (1825) | Won 2-0 | +201724 |
| 9draft | 54 | Baxter, jack (1628) | Lost 0-0 | -201704 |
| 10draft | 39 | Jackway, Robert (1719) | Lost 1-2 | -181686 |
| 11draft | 48 | Jiang, Xi (1585) | Lost 1-2 | -191667 |
| 12draft | 20 | Lau, Desmond (1620) | Lost 0-2 | -191648 |
| 13draft | 27 | Garner, Matthew (1519) | Lost 1-2 | -211627 |
| 14draft | 53 | Giang, Nathan (1539) | Won 2-1 | +171644 |
| top | average opponent: 1624record: 4-7 | new rating: 1644 | ||
| Grand Prix Auckland 2012 (RTR standard) | starting rating: 1494 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 63 | Dougherty, Jared (1497) | Won 2-1 | +181512 |
| 2standard | 42 | Ullrich, Egard C (1499) | Won 2-0 | +171529 |
| 3standard | 18 | Mines, David (1535) | Draw 1-1 | +11530 |
| 4standard | 40 | Freeman, Sean (1536) | Won 2-0 | +181548 |
| 5standard | 20 | Cee, Will (1551) | Draw 1-1 | 01548 |
| 6standard | 39 | Aikman, Tane A (1535) | Won 2-0 | +181566 |
| 7standard | 23 | Jois, Vidya (1690) | Won 2-0 | +201586 |
| 8standard | 12 | Kalas, Oystein (1587) | Draw 1-1 | 01586 |
| 9standard | 13 | Matthews, Tony (1551) | Won 2-0 | +171603 |
| 10standard | 10 | Zheng, Jingwei (1514) | Won 2-1 | +171620 |
| 11standard | 4 | Purdom, Anthony (1557) | Won 2-0 | +161636 |
| 12standard | 4 | Hallett, Anthony (1516) | Won 2-0 | +161652 |
| 13standard | 2 | Cheung, Justin (1767) | ID | 01652 |
| Qstandard | Denz, John (1667) | Won 2-1 | +181670 | |
| Sstandard | Brown, Dylan [AUS] (1752) | Won 2-1 | +201690 | |
| Fstandard | Witton, Adam (1854) | Won 2-0 | +211711 | |
| top | average opponent: 1600record: 12-0-4 | new rating: 1711 | ||
| Grand Prix Brisbane 2011 (ISD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 18 | Nakamura, Shuhei (1990) | Lost 0-0 | -101490 |
| 5standard | 57 | Deix, Jamie (1536) | Lost 0-2 | -171473 |
| 6standard | 85 | Chen, Pan (1517) | Won 2-0 | +191492 |
| 7standard | 68 | Cronau, Zac (1541) | Lost 1-2 | -171475 |
| 8standard | 89 | Andjelkovic, Mase (1519) | Won 2-0 | +191494 |
| top | average opponent: 1621record: 2-3 | new rating: 1494 | ||