Mumby, Alexander
Current rating: 1601
| Grand Prix Dallas-Fort Worth 2019 (modern) | starting rating: 1603 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 88 | Perez, Randy (1664) | Won 2-1 | +191622 |
| 3modern | 20 | Gaspard, Brett (1639) | Lost 1-2 | -181604 |
| 4modern | 210 | Towers, Joshua (1517) | Won 2-0 | +171621 |
| 5modern | 242 | Nguyen, Lee Hung (1455) | Lost 0-2 | -211600 |
| 6modern | 216 | Baskette, Gary (1524) | Won 2-1 | +161616 |
| 7modern | 201 | Rodriguez, Franky (1746) | Lost 0-2 | -151601 |
| top | average opponent: 1591record: 3-3 | new rating: 1601 | ||
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 243 | Pollaski, Jackson (1500) | Lost 0-2 | -181492 |
| 2modern | 336 | Nauck, James (1422) | Won 2-1 | +171509 |
| 3modern | 335 | Orlando, Brian (1447) | Won 2-1 | +171526 |
| 4modern | 202 | Witting, Joshua (1471) | Won 2-0 | +171543 |
| 5modern | 186 | Cox, Patrick (1985) | Lost 0-2 | -111532 |
| 6modern | 197 | Taylor, Sean (1515) | Won 2-0 | +181550 |
| 7modern | 131 | Spencer, David (1444) | Won 2-1 | +161566 |
| 8modern | 110 | Counts, Ryan (1576) | Won 2-1 | +181584 |
| 9modern | 35 | Santos, Jorge (1658) | Lost 1-2 | -161568 |
| 10modern | 78 | Sperlunto, Ralph (1531) | Won 2-0 | +171585 |
| 11modern | 64 | Wysocki, Eric (1544) | Won 2-0 | +171602 |
| 12modern | 49 | Tanner, Charles (1759) | Won 2-1 | +211623 |
| 13modern | 23 | Scott, Jeffrey (1544) | Lost 1-2 | -191604 |
| 14modern | 37 | Morson, Jacob (1595) | Won 2-0 | +171621 |
| 15modern | 35 | Brinkman, John (1580) | Lost 0-2 | -181603 |
| top | average opponent: 1572record: 10-5 | new rating: 1603 | ||
| Grand Prix Atlanta 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 227 | White, Liz (1500) | Won 2-1 | +181518 |
| 2modern | 43 | Wedell, Joshua (1425) | Won 2-0 | +161534 |
| 3modern | 252 | Burchett, Autumn (1980) | Lost 0-2 | -101524 |
| 4modern | 291 | Davis, Shawn (1699) | Lost 0-2 | -151509 |
| 5modern | 432 | McCaulley, Daniel (1431) | Won 2-1 | +171526 |
| 6modern | 368 | Shukla, Neeraj (1674) | Lost 0-2 | -161510 |
| top | average opponent: 1618record: 3-3 | new rating: 1510 | ||