Harper, Matthew
Current rating: 1567
Record: 34-27 (GP) / 2-4 (professional)
| Grand Prix Birmingham 2018 (leg) (legacy) | starting rating: 1608 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 208 | Berukof, Ilja (1502) | Lost 1-2 | -201588 |
| 2legacy | 309 | Puglisi, Francesco (1482) | Won 2-1 | +161604 |
| 3legacy | 289 | Kelly, Ricardo (1650) | Lost 1-2 | -171587 |
| 4legacy | 511 | Bauer, Peter (1500) | Lost 0-2 | -201567 |
| top | average opponent: 1533record: 1-3 | new rating: 1567 | ||
| Grand Prix Lille 2015 (legacy) | starting rating: 1601 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 268 | Diez Pastor, Carlos Da (1500) | Lost 1-2 | -201581 |
| 2legacy | 367 | Barajas, Alfonso (1407) | Lost 1-2 | -211560 |
| 3legacy | 644 | Kouba, Tim (1562) | Won 2-0 | +181578 |
| 4legacy | 559 | Klop, Eege (1406) | Won 2-0 | +151593 |
| 5legacy | 432 | Grunewald, Guillaume (1499) | Won 2-1 | +161609 |
| 6legacy | 265 | Bourgeois, Olivier (1569) | Won 2-1 | +181627 |
| 7legacy | 238 | Swiecki, Robert (1567) | Lost 0-2 | -191608 |
| top | average opponent: 1501record: 4-3 | new rating: 1608 | ||
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1614 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 423 | Liorti, Andrew (1614) | Won 2-1 | +181632 |
| 2sealed | 218 | MacFarlane, Kate (1531) | Lost 1-2 | -201612 |
| 3sealed | 359 | Cleal, Brent (1500) | Won 2-0 | +161628 |
| 4sealed | 428 | Pitman, Matt (1517) | Lost 1-2 | -201608 |
| 5sealed | 513 | Bastien, Christian (1498) | Won 2-1 | +161624 |
| 6sealed | 339 | Chiang, Cameron (1515) | Won 2-0 | +161640 |
| 7sealed | 297 | Batzer, Travis (1611) | Lost 0-2 | -191621 |
| 8sealed | 229 | Watteyne, Michel (1502) | Lost 0-2 | -201601 |
| top | average opponent: 1536record: 4-4 | new rating: 1601 | ||
| Grand Prix Amsterdam 2011 (legacy) | starting rating: 1610 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 787 | Dannenmuller, Emmanuel (1507) | Won 2-1 | +161626 |
| 2legacy | 601 | Varin, Alexis (1500) | Lost 0-2 | -201606 |
| 3legacy | 908 | de Beurs, Anne (1499) | Won 2-0 | +161622 |
| 4legacy | 879 | Nguyen, Patrice (1517) | Won 2-0 | +161638 |
| 5legacy | 716 | La Loggia, Matteo (1463) | Won 2-0 | +151653 |
| 6legacy | 685 | Ziliani, Luca (1555) | Lost 1-2 | -201633 |
| 7legacy | 716 | Krebs, Joel (1537) | Won 2-1 | +161649 |
| 8legacy | 687 | Luo, Erik Zi Hui (1560) | Lost 1-2 | -191630 |
| 9legacy | 707 | Ferrarese, Stefano (1752) | Lost 0-2 | -161614 |
| top | average opponent: 1543record: 5-4 | new rating: 1614 | ||
| Grand Prix London 2011 (MBS limited) | starting rating: 1565 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 253 | Patrick, Blaine (1500) | Lost 0-2 | -201545 |
| 2sealed | 309 | Hudson, Matthew (1482) | Won 2-0 | +171562 |
| 3sealed | 264 | Verbraeken, Eric (1448) | Lost 0-2 | -201542 |
| 4sealed | 350 | Santana, Hugo (1481) | Won 2-0 | +171559 |
| 5sealed | 314 | Donovan, Jamie (1500) | Lost 0-2 | -191540 |
| 6sealed | 313 | Rossouw, Pieter I (1478) | Won 2-0 | +171557 |
| 7sealed | 284 | Julien, Nicolas (1422) | Won 2-0 | +151572 |
| 8sealed | 263 | Watsfeldt, Elias (1714) | Won 2-1 | +211593 |
| 9sealed | 250 | Waldenberger, Marc (1537) | Won 2-0 | +171610 |
| top | average opponent: 1507record: 6-3 | new rating: 1610 | ||
| Grand Prix Birmingham 2004 (DST limited) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 31 | Jackson, Greg (1500) | Lost 1-2 | -191513 |
| 2sealed | 172 | Talbot, Ryan (1483) | Won 2-0 | +171530 |
| 3sealed | 146 | Bishop, Martin (1500) | Won 2-0 | +181548 |
| 4sealed | 113 | Borg, Glenn (1580) | Lost 0-2 | -181530 |
| 5sealed | 141 | Glenister, Mark (1509) | Won 2-0 | +181548 |
| 6sealed | 135 | Northcott, Michael (1518) | Won 2-0 | +171565 |
| 7sealed | 73 | gomez, julian (1534) | Won 2-0 | +181583 |
| 8sealed | 41 | Randall, Stephen (1562) | Lost 1-2 | -181565 |
| top | average opponent: 1523record: 5-3 | new rating: 1565 | ||
| Grand Prix London 2003 (Onslaught block) | starting rating: 1452 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 48 | Dols, Roel (1536) | Lost 0-2 | -161436 |
| 2block | 209 | Armstrong, Stuart (1482) | Won 2-0 | +191455 |
| 3block | 166 | Ahmed, Mehdi (1504) | Won 2-0 | +191474 |
| 4block | 132 | Massuet, Silvere (1549) | Won 2-1 | +191493 |
| 5block | 109 | Tabak, Jack (1545) | Won 2-1 | +191512 |
| 6block | 65 | Orsini Jones, Matteo (1556) | Lost 1-2 | -171495 |
| 7block | 61 | Hardy, Chris [ENG] (1507) | Won 2-0 | +181513 |
| 8block | 49 | Glenister, Mark (1544) | Won 2-0 | +191532 |
| top | average opponent: 1528record: 6-2 | new rating: 1532 | ||
| Pro Tour San Diego 2002 (ODY rochester) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1rochester | 107 | Hirsch, Steve (1528) | Won 2-1 | +191485 |
| 2rochester | 117 | Halter, James (1778) | Lost 1-2 | -131472 |
| 3rochester | 87 | Hayashi, Shinsuke (1697) | Lost 0-2 | -141458 |
| 4rochester | 110 | Walamies, Tomi (1970) | Won 2-0 | +271485 |
| 5rochester | 154 | Blech, Reinhard (1658) | Lost 0-2 | -151470 |
| 7rochester | 101 | Ball, David H (1479) | Lost 0-2 | -181452 |
| top | average opponent: 1685record: 2-4 | new rating: 1452 | ||
| Grand Prix London 2001 (Invasion block) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 12 | Crnobori, Lovre (1569) | Lost 0-2 | -161466 |
| 2block | 212 | Pashley, Stephen (1482) | Won 2-1 | +181484 |
| 3block | 115 | Luginbuhl, Thomas (1483) | Won 2-0 | +181502 |
| 4block | 110 | Gariglio, Serge (1495) | Lost 0-2 | -181484 |
| 5block | 128 | Plaumann, Rainer (1497) | Lost 0-2 | -181466 |
| top | average opponent: 1505record: 2-3 | new rating: 1466 | ||
| Grand Prix Manchester 2000 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 20 | Newberry, Stephen (1511) | Lost 0-2 | -181482 |
| 2sealed | 78 | Carlisle, Owen (1482) | Won 2-0 | +181500 |
| 3sealed | 78 | Theobalds, Graham (1499) | Lost 0-2 | -181482 |
| top | average opponent: 1498record: 1-2 | new rating: 1482 | ||