Grissom, Shelby
Current rating: 1457
Record: 23-31-1
| Regional Championships Atlanta 2023 (pioneer) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 214 | Walker, Taylor (1415) | Won 2-1 | +171502 |
| 2pioneer | 254 | Schlott, James (1591) | Won 2-1 | +201522 |
| 3pioneer | 94 | Fusco, Roman (1591) | Lost 1-2 | -171505 |
| 4pioneer | 119 | Maahs, Josh (1519) | Lost 0-2 | -181487 |
| 5pioneer | 235 | Braud, Chris (1455) | Lost 1-2 | -191468 |
| 6pioneer | 390 | Grinberg, Avi (1593) | Lost 0-2 | -151453 |
| 7pioneer | 416 | Johnston, James (1653) | Lost 1-2 | -151438 |
| 8pioneer | 340 | Coble, Taylor (1450) | Won 2-1 | +191457 |
| top | average opponent: 1533record: 3-5 | new rating: 1457 | ||
| Grand Prix Richmond 2019 (ELD standard) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 35 | Harding, Tommy (1777) | Lost 1-2 | -141501 |
| 4standard | 127 | Lawson, Joseph (1472) | Lost 0-2 | -181483 |
| 5standard | 211 | Freas, Gerald (1558) | Lost 0-2 | -171466 |
| 6standard | 204 | Paustian, Maxx (1543) | Lost 1-2 | -161450 |
| 7standard | 170 | Normandin, Katharine (1502) | Won 2-1 | +191469 |
| 8standard | 147 | Harley, Carter (1395) | Won 2-0 | +161485 |
| top | average opponent: 1541record: 2-4 | new rating: 1485 | ||
| Grand Prix Minneapolis 2019 (modern) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 14 | Eldred, Ron (1531) | Won 2-1 | +191462 |
| 4modern | 97 | Demmith, Zach (1536) | Won 2-1 | +201482 |
| 5modern | 41 | Kramer, Kevan (1558) | Won 2-0 | +191501 |
| 6modern | 21 | Hicks, Jackson (2023) | Lost 0-2 | -91492 |
| 7modern | 58 | Onagan, Chris (1479) | Won 2-1 | +181510 |
| 8modern | 9 | Petropoulos, Anthony (1840) | Lost 1-2 | -131497 |
| 9modern | 25 | Tarnowski, Benjamin (1700) | Lost 0-2 | -141483 |
| 10modern | 79 | Andersen, Timothy (1564) | Draw 1-1 | +11484 |
| 11modern | 71 | Gallagher, Sean (1534) | Won 2-0 | +191503 |
| 12modern | 54 | Murphy, Corey (1541) | Won 2-1 | +191522 |
| 13modern | 39 | Lentsch, Zachary (1627) | Lost 0-2 | -161506 |
| 14modern | 53 | Hart, Kieth (1701) | Lost 0-2 | -151491 |
| 15modern | 61 | Iaali, Christopher (1785) | Won 2-0 | +241515 |
| top | average opponent: 1648record: 7-5-1 | new rating: 1515 | ||
| Grand Prix Atlanta 2018 (modern) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 228 | Funderburk, Joey (1517) | Won 2-0 | +191508 |
| 3modern | 127 | Loeser, Brandon (1543) | Lost 1-2 | -171491 |
| 4modern | 261 | Yoshino, Kohei (1631) | Lost 0-2 | -161475 |
| 5modern | 566 | Blackwell, John (1464) | Lost 1-2 | -181457 |
| 6modern | 545 | Synan, David (1471) | Won 2-0 | +181475 |
| 7modern | 389 | LaVardera, Clinton (1522) | Lost 1-2 | -171458 |
| 8modern | 376 | Self, Joshua (1609) | Lost 1-2 | -151443 |
| top | average opponent: 1537record: 2-5 | new rating: 1443 | ||
| Grand Prix Richmond 2018 (std) (M19 standard) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 56 | Hamblen, Daniel (1529) | Lost 0-2 | -161448 |
| 3standard | 263 | Maddalena, Todd (1422) | Won 2-1 | +171465 |
| 4standard | 171 | Olsen, Christopher (1443) | Won 2-0 | +181483 |
| 5standard | 179 | Ragan, Benjamin (1733) | Lost 1-2 | -141469 |
| 6standard | 165 | Sloan, Shawn (1564) | Lost 1-2 | -161453 |
| 7standard | 229 | Smith, Ryan 7005 (1516) | Won 2-1 | +191472 |
| 8standard | 166 | Karsten, James (1432) | Won 2-1 | +171489 |
| top | average opponent: 1520record: 4-3 | new rating: 1489 | ||
| Grand Prix Orlando 2018 (M19 standard) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 39 | Montefusco, William (1518) | Won 2-1 | +201473 |
| 3standard | 119 | Sarap, Karl (1969) | Lost 0-2 | -101463 |
| 4standard | 266 | Kim, James (1377) | Won 2-0 | +161479 |
| 5standard | 221 | Thornton, Dustin (1711) | Won 2-1 | +221501 |
| 6standard | 100 | Sikkink Johnson, Matt (1987) | Lost 0-2 | -91492 |
| 7standard | 168 | Wescoe, Craig (1876) | Lost 1-2 | -121480 |
| 8standard | 202 | Mark, Lee (1595) | Lost 0-2 | -161464 |
| top | average opponent: 1719record: 3-4 | new rating: 1464 | ||
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 38 | Mendez, Daniel (1506) | Won 2-1 | +181518 |
| 3modern | 48 | Longo, Jacob (1597) | Lost 1-2 | -161502 |
| 4modern | 600 | Favretto, Carlo (1533) | Won 2-1 | +181520 |
| 5modern | 252 | Leduc Gauthier, Samuel (1636) | Lost 1-2 | -161504 |
| 6modern | 519 | Leek, Gary (1666) | Lost 1-2 | -151489 |
| 7modern | 1349 | Paine, Linden (1526) | Lost 1-2 | -171472 |
| 8modern | 479 | Lewsadder, Brian (1447) | Lost 0-2 | -191453 |
| top | average opponent: 1559record: 2-5 | new rating: 1453 | ||