Kennedy, Marshall
Current rating: 1421
| Grand Prix Las Vegas 2019 (modern) (modern) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 348 | Champney, Justin (1442) | Lost 0-2 | -191478 |
| 2modern | 426 | Casias, Joseph (1409) | Lost 0-2 | -191459 |
| 3modern | 761 | Demille, Brian (1465) | Lost 1-2 | -181441 |
| 4modern | 795 | Abarca, Aaron (1322) | Lost 0-2 | -201421 |
| top | average opponent: 1409record: 0-4 | new rating: 1421 | ||
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1553 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 185 | Briscoe, Britt (1586) | Lost 1-2 | -181535 |
| 2modern | 271 | Nemier, Blaine (1495) | Lost 0-2 | -181517 |
| 3modern | 472 | Ford, Ben (1446) | Lost 0-2 | -201497 |
| top | average opponent: 1509record: 0-3 | new rating: 1497 | ||
| Grand Prix Atlanta 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 475 | Ormsby, Cade (1517) | Won 2-0 | +181518 |
| 2modern | 21 | Ford, Luke (1578) | Won 2-1 | +191537 |
| 3modern | 237 | Shull, Kyle (1529) | Won 2-1 | +181555 |
| 4modern | 31 | Lahonen, Leo (1936) | Lost 1-2 | -111544 |
| 5modern | 263 | Naide, Kazutaka (1845) | Won 2-1 | +231567 |
| 6modern | 164 | Nisivoccia, Bob (1664) | Lost 0-2 | -161551 |
| 7modern | 259 | Branham, Andrew (1517) | Won 2-1 | +171568 |
| 8modern | 112 | Jones, William H (1558) | Won 1-0 | +181586 |
| 9modern | 153 | Lucas, Caden (1577) | Lost 0-2 | -181568 |
| 10modern | 127 | Clark, Mason (1720) | Lost 0-2 | -151553 |
| top | average opponent: 1644record: 6-4 | new rating: 1553 | ||