DeVoll, Mark
Current rating: 1303
Record: 6-18-1
| Grand Prix Richmond 2018 (std) (M19 standard) | starting rating: 1399 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 157 | Love, Dominick (1520) | Lost 1-2 | -161383 |
| 2standard | 180 | Bradley, John (1482) | Lost 0-2 | -161367 |
| 3standard | 347 | Head, Jake (1464) | Lost 1-2 | -161351 |
| 4standard | 351 | Nawrocki, Thomas (1446) | Won 2-0 | +201371 |
| 5standard | 322 | Reynolds, Ryan (1442) | Lost 1-2 | -171354 |
| 6standard | 299 | Bliss, Michael (1446) | Lost 1-2 | -161338 |
| 7standard | 264 | Jackson, Bryan (1376) | Lost 0-2 | -181320 |
| 8standard | 230 | Sames, Kevin (1366) | Lost 0-2 | -171303 |
| top | average opponent: 1443record: 1-7 | new rating: 1303 | ||
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1406 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 70 | Cain, Jonathan (1450) | Won 2-0 | +191425 |
| 2modern | 6 | Richards, Robert (1501) | Lost 0-2 | -171408 |
| 3modern | 897 | Young, Kaine (1500) | Won 2-1 | +201428 |
| 4modern | 398 | Johnson, Daryian (1517) | Lost 0-2 | -171411 |
| 5modern | 692 | Kramer, Jeremy (1502) | Lost 0-2 | -161395 |
| 6modern | 708 | Nicely, Cody (1502) | Lost 0-2 | -161379 |
| 7modern | 588 | Burleson, Jesse (1404) | Draw 1-1 | 01379 |
| 8modern | 486 | Coleman, Austin (1480) | Won 2-0 | +201399 |
| top | average opponent: 1482record: 3-4-1 | new rating: 1399 | ||
| Grand Prix Washington DC 2017 (HOU standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 98 | Cornett, Joshua (1488) | Lost 0-2 | -181482 |
| 2standard | 526 | Phillips, Nicholas (1411) | Lost 0-2 | -201462 |
| 3standard | 752 | Vierra, Steven (1462) | Lost 0-2 | -181444 |
| 4standard | 762 | Palmer, Michael (1376) | Won 2-0 | +171461 |
| 5standard | 636 | Burns, Robert (1449) | Lost 1-2 | -181443 |
| 6standard | 674 | Blankenship, Freddie (1427) | Lost 1-2 | -181425 |
| 7standard | 611 | Mack, Dalton (1431) | Won 2-1 | +181443 |
| 8standard | 530 | Fennen, Adam (1386) | Lost 0-2 | -191424 |
| 9standard | 462 | Wheatley, Josiah (1427) | Lost 0-2 | -181406 |
| top | average opponent: 1429record: 2-7 | new rating: 1406 | ||