Breyne, Marcus
Current rating: 1758 (#3529)
Record: 36-21-1
| Grand Prix Portland 2019 (ELD standard) | starting rating: 1612 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 66 | Richardson, Kyle (1445) | Won 2-1 | +151627 |
| 2standard | 60 | Lewis, Robert (1411) | Won 2-0 | +141641 |
| 3standard | 4 | Brattain, Sebastian (1457) | Lost 0-0 | -221619 |
| 4standard | 149 | Hackleman, Tom (1621) | Won 2-1 | +181637 |
| 5standard | 61 | Butler, Torin (1549) | Won 2-1 | +171654 |
| 6standard | 47 | Witten, Zack (2017) | Won 2-0 | +241678 |
| 7standard | 23 | Rocco, Craig (1876) | Won 2-1 | +221700 |
| 8standard | 24 | Egamino, Janperson (1484) | Won 2-0 | +141714 |
| 9standard | 13 | Neal, Richard (1849) | Won 2-0 | +201734 |
| 10standard | 6 | Weller-Gordon, Brian (1885) | Lost 1-2 | -151719 |
| 11standard | 6 | Smith, Chris [CAN] (1783) | Won 2-0 | +191738 |
| 12standard | 8 | Kim, Austin (1816) | Lost 1-2 | -161722 |
| 13standard | 13 | Finley, Christopher (1799) | Won 2-0 | +191741 |
| 14standard | 6 | Chen, Jacob (1681) | Won 2-1 | +171758 |
| 15standard | 8 | Parrish, Joby (1852) | ID | 01758 |
| top | average opponent: 1702record: 11-3-1 | new rating: 1758 | ||
| Grand Prix Sacramento 2018 (M19 limited) | starting rating: 1603 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 312 | Bachicha, Lane (1403) | Won 2-0 | +141617 |
| 2sealed | 86 | Kennedy, Jennifer (1500) | Won 2-0 | +161633 |
| 3sealed | 118 | Liu, Kevin (1494) | Lost 1-2 | -201613 |
| 4sealed | 375 | Rubin, Everett (1515) | Won 2-0 | +161629 |
| 5sealed | 206 | Kim, Cynic (1838) | Won 2-1 | +221651 |
| 6sealed | 130 | Edholm, Marcus (1577) | Lost 1-2 | -201631 |
| 7sealed | 108 | Valdez, Joseph (1544) | Lost 0-2 | -191612 |
| top | average opponent: 1553record: 4-3 | new rating: 1612 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1600 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 372 | Mitchell, Max (1635) | Won 2-1 | +181618 |
| 2standard | 114 | Sustaita, Nicolas (1526) | Lost 0-2 | -191599 |
| 3standard | 439 | Matheson, Roland (1755) | Lost 0-2 | -151584 |
| 4standard | 687 | Carr, Aaron (1507) | Won 2-0 | +161600 |
| 5standard | 551 | Bailey, Jeremy (1501) | Won 2-0 | +161616 |
| 6standard | 236 | Ochoa, David (1861) | Lost 0-2 | -131603 |
| top | average opponent: 1631record: 3-3 | new rating: 1603 | ||
| Grand Prix Portland 2016 (EMN standard) | starting rating: 1608 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 236 | Stephens, Joseph (1500) | Won 2-0 | +161624 |
| 2standard | 195 | Brester, Kris (1507) | Draw 1-1 | -21622 |
| 3standard | 339 | Carson, Erik (1807) | Lost 1-2 | -151607 |
| 4standard | 502 | Gomez, Adam (1500) | Won 2-1 | +171624 |
| 5standard | 346 | Perdomo, Alejandro (1516) | Lost 0-2 | -201604 |
| 6standard | 473 | Martinez, Phoenix (1519) | Won 2-0 | +161620 |
| 7standard | 332 | Salazar, J.D. (1499) | Lost 1-2 | -201600 |
| top | average opponent: 1550record: 3-3-1 | new rating: 1600 | ||
| Grand Prix Portland 2013 (modern) | starting rating: 1573 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 111 | Yu, Phineas (1500) | Won 2-1 | +171590 |
| 2modern | 105 | Coromina, Elias (1518) | Won 2-1 | +161606 |
| 3modern | 126 | Deardorff, Daniel F. (1536) | Won 2-1 | +171623 |
| 4modern | 148 | Burns, Richard (1554) | Won 2-0 | +171640 |
| 5modern | 12 | De Haan, Rob (1787) | Lost 0-2 | -151625 |
| 6modern | 136 | Miller, Colin (1793) | Won 2-0 | +211646 |
| 7modern | 36 | Dunks, Jess (1645) | Lost 0-2 | -181628 |
| 8modern | 234 | Chandler, Kyle (1555) | Lost 0-2 | -201608 |
| top | average opponent: 1611record: 5-3 | new rating: 1608 | ||
| Grand Prix Seattle-Tacoma 2012 (DKA limited) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 254 | Perryman, Fred (1448) | Lost 1-2 | -191495 |
| 2sealed | 401 | Iukes, Cory (1447) | Won 2-1 | +171512 |
| 3sealed | 210 | Tachiyama, Alex (1500) | Won 2-0 | +181530 |
| 4sealed | 236 | Magnussen, Aren (1518) | Won 2-1 | +181548 |
| 5sealed | 109 | Williams, David A (1803) | Won 2-0 | +221570 |
| 6sealed | 52 | Ochoa, David (1999) | Lost 0-2 | -101560 |
| 7sealed | 139 | van Sickle, Joseph (1334) | Won 2-1 | +131573 |
| 8sealed | 166 | Dedych, Luke P (1540) | Won 2-0 | +181591 |
| 9sealed | 81 | Robertsen, Christian (1601) | Lost 1-2 | -181573 |
| top | average opponent: 1577record: 6-3 | new rating: 1573 | ||
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 78 | Lapp, Tom (1444) | Won 2-1 | +171517 |
| 2sealed | 341 | Phillips, Michael (1519) | Won 2-0 | +181535 |
| 3sealed | 3 | Magyarodi, Thomas (1499) | Lost 0-2 | -191516 |
| 4sealed | 339 | KLUG, HAYLEY E (1519) | Lost 0-2 | -181498 |
| 5sealed | 358 | Nguyen, Charlie (1500) | Won 2-0 | +181516 |
| 6sealed | 257 | Adams, Kenneth A (1432) | Won 2-0 | +171533 |
| 7sealed | 132 | Brown, Richard S (1490) | Lost 1-2 | -191514 |
| top | average opponent: 1486record: 4-3 | new rating: 1514 | ||