Grawbarger, Logan
Current rating: 1558
Record: 25-22
| Grand Prix Toronto 2019 (modern) | starting rating: 1603 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 199 | Farand, Herve (1388) | Won 2-0 | +141617 |
| 2modern | 230 | Vallie, Josiah (1524) | Lost 0-2 | -191598 |
| 3modern | 294 | Alejandro, Blake (1510) | Lost 0-2 | -201578 |
| 4modern | 430 | Hefkey, Scott (1465) | Lost 1-2 | -201558 |
| top | average opponent: 1472record: 1-3 | new rating: 1558 | ||
| Grand Prix Toronto 2018 (modern) | starting rating: 1607 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 225 | Wong-Tremblay, Charles (1564) | Won 2-1 | +181625 |
| 2modern | 41 | Chainer, Daniel (1518) | Lost 1-2 | -201605 |
| 3modern | 543 | Deboveanu, Vlad (1500) | Won 2-1 | +161621 |
| 4modern | 192 | LaPointe, Charles (1520) | Won 2-0 | +161637 |
| 5modern | 182 | Moody, Mitchell (1531) | Lost 0-2 | -201617 |
| 6modern | 348 | Russell, Griffin (1573) | Won 2-1 | +171634 |
| 7modern | 184 | Thibeau, Markus (1710) | Lost 1-2 | -161618 |
| 8modern | 293 | Cochran, Hunter (1806) | Lost 0-2 | -151603 |
| top | average opponent: 1590record: 4-4 | new rating: 1603 | ||
| Grand Prix Vancouver 2017 (modern) | starting rating: 1594 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 2101 | Villarreal, Hector (1602) | Won 2-0 | +181612 |
| 2modern | 2140 | Marshall, Jacob (1731) | Won 2-0 | +201632 |
| 3modern | 2138 | Cheredaryk, Blair (1507) | Won 2-0 | +161648 |
| 4modern | 2048 | Kirkland, Matt (1688) | Won 2-1 | +181666 |
| 5modern | 2008 | Moshrefi, Arian (1620) | Lost 0-2 | -181648 |
| 6modern | 2044 | Hammond, Donovan (1638) | Won 2-0 | +171665 |
| 7modern | 2044 | Varnier, Matt (1591) | Lost 1-2 | -191646 |
| 8modern | 2213 | Pasdernick, Cody (1561) | Lost 0-2 | -201626 |
| 9modern | 2249 | Brock, Michael (1572) | Lost 1-2 | -191607 |
| top | average opponent: 1612record: 5-4 | new rating: 1607 | ||
| Grand Prix Toronto 2016 (SOI standard) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 133 | Sher, Adam (1574) | Won 2-0 | +191542 |
| 2standard | 360 | Ponton, Sebastien (1579) | Won 2-1 | +191561 |
| 3standard | 13 | Gordillo, Massimo (1602) | Won 2-0 | +191580 |
| 4standard | 42 | Pelrine, Josh (1686) | Lost 1-2 | -161564 |
| 5standard | 204 | Moulton, Jesse (1815) | Won 2-1 | +221586 |
| 6standard | 79 | Lu, Jack (1580) | Won 2-1 | +181604 |
| 7standard | 37 | Chen, Cliff (1666) | Won 2-1 | +191623 |
| 8standard | 48 | Bergeron, Julien (1636) | Lost 1-2 | -181605 |
| 9standard | 90 | Carey, Bryan (1641) | Lost 0-2 | -171588 |
| 10standard | 220 | Schwarz, Sascha (1959) | Won 2-0 | +251613 |
| 11standard | 129 | Brett, Max (1561) | Lost 0-2 | -191594 |
| top | average opponent: 1663record: 7-4 | new rating: 1594 | ||
| Grand Prix Detroit 2016 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 393 | Benson, William (1500) | Lost 0-2 | -181482 |
| 2modern | 1016 | Brumm, Joel (1477) | Won 2-1 | +181500 |
| 3modern | 731 | Davis, Zachary (1433) | Won 2-1 | +171517 |
| 4modern | 366 | Keller, Alex (1517) | Won 2-0 | +181535 |
| 5modern | 301 | Ablack, Mukesh (1511) | Lost 1-2 | -191516 |
| 6modern | 504 | Barr, Zach (1517) | Won 2-1 | +181534 |
| 7modern | 396 | Bollei, Richard (1542) | Won 2-1 | +181552 |
| 8modern | 132 | Kuzemczak, Devan (1538) | Won 2-0 | +181570 |
| 9modern | 136 | Sullano, Andrew (1734) | Lost 0-2 | -151555 |
| 10modern | 247 | Carle, Ian (1681) | Won 2-1 | +201575 |
| 11modern | 160 | Bylander, Jeremy (1569) | Lost 1-2 | -181557 |
| 12modern | 49 | Simpson, Chad (1611) | Lost 1-2 | -171540 |
| 13modern | 218 | Benzinger, Chris (1662) | Lost 1-2 | -161524 |
| 14modern | 220 | Varner, Adam (1484) | Lost 1-2 | -181506 |
| 15modern | 204 | Carey, Chris (1491) | Won 2-1 | +171523 |
| top | average opponent: 1551record: 8-7 | new rating: 1523 | ||