Marshall, Geoffrey
Current rating: 1691
Record: 47-37-1
| Regional Championships Sydney 2023 (pioneer) | starting rating: 1729 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 38 | Cole, Chifley (1760) | Lost 1-2 | -171712 |
| 2pioneer | 72 | Leong, Chia Wei (1532) | Lost 1-2 | -211691 |
| top | average opponent: 1646record: 0-2 | new rating: 1691 | ||
| Regional Championships Melbourne 2023 (ONE standard) | starting rating: 1779 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 57 | Leong, Chia Wei (1500) | Lost 1-2 | -231756 |
| 2standard | 65 | Cao, Vincent (1451) | Won 2-1 | +131769 |
| 3standard | 31 | Sullivan, Campbell (1513) | Lost 1-2 | -231746 |
| 4standard | 51 | Wilks, James (1798) | Lost 1-2 | -171729 |
| top | average opponent: 1566record: 1-3 | new rating: 1729 | ||
| Regional Championships Sydney 2022 (pioneer) | starting rating: 1730 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 33 | Huang, David (1653) | Lost 0-2 | -201710 |
| 2pioneer | 71 | Bass, Nathan (1481) | Won 2-0 | +141724 |
| 3pioneer | 32 | Rashad, Brandon (1436) | Lost 1-2 | -231701 |
| 4pioneer | 54 | Van Tienen, Kyle (1489) | Won 2-0 | +141715 |
| 5pioneer | 39 | Martin, George (1507) | Won 2-0 | +151730 |
| 6pioneer | 31 | Waterson, Ittai (1526) | Won 2-1 | +141744 |
| 7pioneer | 11 | Roper, Daniel (1542) | Won 2-1 | +141758 |
| 8pioneer | 13 | Lou, Violet (1922) | Won 2-1 | +211779 |
| top | average opponent: 1569record: 6-2 | new rating: 1779 | ||
| Grand Prix Brisbane 2019 (ELD standard) | starting rating: 1593 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 163 | Merriman, Jamie (1500) | Won 2-1 | +161609 |
| 2standard | 24 | Wilson, Joshua [AUS] (1496) | Won 2-1 | +161625 |
| 3standard | 5 | Mines, David (2060) | Lost 0-2 | -101615 |
| 4standard | 102 | Ong, Qian Chern (1469) | Won 2-0 | +151630 |
| 5standard | 56 | Pearce, Andrew [NZL] (1542) | Won 2-0 | +171647 |
| 6standard | 48 | Dare, Ryan (1682) | Won 2-1 | +181665 |
| 7standard | 9 | Gardiner, Zachary (1650) | Won 2-1 | +181683 |
| 8standard | 8 | Robb, Justin (1810) | Won 2-1 | +201703 |
| 9standard | 7 | Girvan, Brett (1750) | Lost 0-2 | -171686 |
| 10standard | 19 | Zhao, Jonathan (1594) | Won 2-1 | +161702 |
| 11standard | 11 | Radford, Kristian (1582) | Won 2-1 | +161718 |
| 12standard | 4 | Cubit, Ryan (1983) | Won 2-0 | +231741 |
| 13standard | 32 | Billinghurst, Michael (1753) | Won 2-1 | +181759 |
| 14standard | 2 | Basser, Nathan (2036) | Lost 1-2 | -131746 |
| 15standard | 6 | Lee, Anthony (1840) | Lost 1-2 | -161730 |
| top | average opponent: 1716record: 11-4 | new rating: 1730 | ||
| Grand Prix Melbourne 2018 (GRN limited) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 64 | Chan, Steven (1553) | Won 2-0 | +191547 |
| 2sealed | 149 | Kuprys, Pranas (1515) | Won 2-1 | +171564 |
| 3sealed | 62 | Stewart, Jesse (1500) | Won 2-1 | +171581 |
| 4sealed | 60 | Pranoto, Andreas (1874) | Lost 0-2 | -131568 |
| 5sealed | 126 | Cawood, Winston (1514) | Won 2-1 | +171585 |
| 6sealed | 62 | Winter, Jonathan (1864) | Won 2-0 | +231608 |
| 7sealed | 58 | Wilks, James (1666) | Won 2-1 | +191627 |
| 8sealed | 12 | Lee, Anthony (1812) | Lost 1-2 | -151612 |
| 9sealed | 26 | Ivatts, Davin (1534) | Lost 1-2 | -191593 |
| 10draft | 57 | Reid, Callum (1545) | Lost 0-2 | -191574 |
| 11draft | 44 | Hee, Chung Wye (1679) | Won 2-0 | +201594 |
| 12draft | 50 | Wei, Chengyi (1577) | Won 2-1 | +181612 |
| 13draft | 57 | Ivatts, Davin (1539) | Won 2-1 | +161628 |
| 14draft | 53 | Kee, Benjamin (1659) | Lost 1-2 | -171611 |
| 15draft | 30 | Shanley, Glenn (1624) | Lost 1-2 | -181593 |
| top | average opponent: 1630record: 9-6 | new rating: 1593 | ||
| Grand Prix Sydney 2016 (EMN limited) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 104 | Swiatkiwsky, Michael (1623) | Lost 1-2 | -161519 |
| 3sealed | 870 | Rode-Bramanis, Jonathon (1505) | Won 2-0 | +171536 |
| 4sealed | 302 | Liu, Xiao (1539) | Won 2-1 | +181554 |
| 5sealed | 104 | Moore, Henry (1742) | Lost 0-2 | -141540 |
| 6sealed | 209 | Jones, Chris [AUS] (1434) | Won 2-0 | +161556 |
| 7sealed | 215 | Kowalski, Grzegorz (2101) | Lost 0-2 | -91547 |
| 8sealed | 216 | Spear, Troy (1497) | Lost 1-2 | -191528 |
| top | average opponent: 1635record: 3-4 | new rating: 1528 | ||
| Grand Prix Sydney 2015 (BFZ limited) | starting rating: 1573 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 40 | Pepper, Patrick (1583) | Lost 0-2 | -181555 |
| 2sealed | 358 | O'Keefe, Samuel (1450) | Lost 1-2 | -201535 |
| top | average opponent: 1517record: 0-2 | new rating: 1535 | ||
| Grand Prix Melbourne 2014 (BNG standard) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 143 | Pryor, Celeste (1462) | Won 2-0 | +171537 |
| 2standard | 115 | Keedle, Dante (1518) | Won 2-1 | +181555 |
| 3standard | 31 | Ashton, Dylan (1555) | Lost 0-2 | -181537 |
| 4standard | 111 | Matthews, Alexander (1549) | Won 2-0 | +181555 |
| 5standard | 49 | Karopoulos, Sam (1523) | Lost 1-2 | -191536 |
| 6standard | 223 | Andrews, Josh (1520) | Won 2-0 | +181554 |
| 7standard | 154 | Likht, Richard (1668) | Won 2-1 | +201574 |
| 8standard | 62 | Limin, David (1555) | Lost 1-2 | -181556 |
| 9standard | 126 | Lau, Michael (1505) | Won 2-0 | +171573 |
| top | average opponent: 1539record: 6-3 | new rating: 1573 | ||
| Grand Prix Sydney 2013 (RTR limited) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 35 | Cooper, Joseph (1471) | Won 2-1 | +181502 |
| 5sealed | 27 | Schroder, Ivan (1676) | Won 2-0 | +211523 |
| 6sealed | 5 | Mulcahy, Luke (1741) | Won 2-1 | +221545 |
| 7sealed | 3 | Wang, Chih Ming (1619) | Lost 1-2 | -171528 |
| 8sealed | 18 | Swannack, Cole (1608) | Lost 0-2 | -161512 |
| 9draft | 8 | Pirie, James (1532) | Lost 0-0 | -181494 |
| 10draft | 8 | Puszet, Jarron (1653) | Won 2-1 | +211515 |
| 11draft | 47 | Mulcahy, Luke (1710) | Won 2-0 | +211536 |
| 12draft | 12 | Ball, Daniel (1559) | Lost 0-2 | -171519 |
| 13draft | 49 | Jolly, Morgan (1578) | Lost 1-2 | -171502 |
| 14draft | 41 | Cubit, Ryan (1510) | Won 2-1 | +181520 |
| top | average opponent: 1605record: 6-5 | new rating: 1520 | ||
| Grand Prix Melbourne 2012 (DKA limited) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 91 | Liang, Alfred (1518) | Lost 1-2 | -181522 |
| 3sealed | 98 | Cheah, Jonathan G (1480) | Draw 1-1 | -11521 |
| 4sealed | 174 | Beczak, Alex (1475) | Lost 1-2 | -191502 |
| 5sealed | 204 | Taifalos, Matthew (1481) | Lost 0-2 | -181484 |
| top | average opponent: 1488record: 0-3-1 | new rating: 1484 | ||
| Grand Prix Melbourne 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 137 | Swan, Jamie (1500) | Lost 1-2 | -181482 |
| 2sealed | 109 | Ditty, Nick (1482) | Won 2-0 | +181500 |
| 3sealed | 119 | Mudge, Jordon (1499) | Won 2-1 | +181518 |
| 4sealed | 73 | Kotchoff, Michael (1464) | Won 2-0 | +171535 |
| 5sealed | 59 | Salmon, Andrew [AUS] (1502) | Lost 0-2 | -191516 |
| 6sealed | 95 | Hay, Christopher (1552) | Won 2-0 | +191535 |
| 7sealed | 46 | Iyanaga, Junya (1849) | Won 2-0 | +241559 |
| 8sealed | 61 | Goh, Eu Jin (1549) | Lost 0-2 | -191540 |
| top | average opponent: 1550record: 5-3 | new rating: 1540 | ||