Johnson, Devin
Current rating: 1429
Record: 13-19
| Grand Prix Las Vegas 2019 (modern) (modern) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 467 | Egan, Kevin (1706) | Won 2-1 | +221500 |
| 2modern | 236 | Reilly, Beau (1590) | Lost 1-2 | -161484 |
| 3modern | 576 | Zwolinski, Jacob (1462) | Lost 0-2 | -191465 |
| 4modern | 623 | Justis, Jason (1477) | Lost 0-2 | -181447 |
| 5modern | 714 | Lagarde, Luc (1414) | Lost 0-2 | -181429 |
| top | average opponent: 1530record: 1-4 | new rating: 1429 | ||
| Grand Prix Madison 2019 (WAR limited) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1 | Carlson, Eric (1384) | Won 2-0 | +161503 |
| 2sealed | 104 | Meyers, David (1431) | Won 2-0 | +161519 |
| 3sealed | 171 | Gascoyne, Evan (1783) | Lost 0-2 | -131506 |
| 4sealed | 261 | Yetka, David (1748) | Lost 1-2 | -131493 |
| 5sealed | 339 | Ernst, David (1528) | Won 2-1 | +181511 |
| 6sealed | 256 | Dorian, Tevan (1489) | Lost 0-2 | -181493 |
| 7sealed | 226 | Novak, Tyler (1663) | Lost 0-2 | -151478 |
| top | average opponent: 1575record: 3-4 | new rating: 1478 | ||
| Grand Prix Milwaukee 2016 (KLD limited) | starting rating: 1509 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 229 | Miller, Jesse (1500) | Won 2-1 | +171526 |
| 2sealed | 209 | Jensen, Roma (1518) | Lost 0-2 | -181508 |
| 3sealed | 475 | Monaghan, Shawn (1482) | Won 2-0 | +181526 |
| 4sealed | 363 | Dolan, Patrick (1475) | Lost 0-2 | -191507 |
| 5sealed | 354 | Kirchner, Gavin (1487) | Lost 0-2 | -191488 |
| 6sealed | 443 | Ebertowski, Aaron (1406) | Won 2-1 | +171505 |
| 7sealed | 303 | Petersen, Sean (1486) | Lost 0-2 | -181487 |
| top | average opponent: 1479record: 3-4 | new rating: 1487 | ||
| Grand Prix Madison 2015 (BFZ limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 537 | Malone, Michael (1836) | Won 2-0 | +251489 |
| 2sealed | 92 | Kane, Will (1514) | Won 2-1 | +181507 |
| 3sealed | 28 | LaBarbera, Sterling (1536) | Lost 1-2 | -171490 |
| 4sealed | 321 | Holmes, Brandon (1520) | Won 2-0 | +181508 |
| 5sealed | 118 | Quiroga, Martin (1823) | Won 2-0 | +241532 |
| 6sealed | 109 | Jansen, Adam (1755) | Won 2-1 | +221554 |
| 7sealed | 105 | Boucek, Jaroslav (1881) | Lost 1-2 | -131541 |
| 8sealed | 136 | McGrain, Peter (1705) | Lost 1-2 | -151526 |
| 9sealed | 175 | Hill, Mark 370 (1538) | Lost 0-2 | -171509 |
| top | average opponent: 1679record: 5-4 | new rating: 1509 | ||
| Grand Prix Chicago 2014 (JOU standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 837 | Jankovich, Matthew (1500) | Lost 0-2 | -181482 |
| 2standard | 840 | Resnik, Kyle (1481) | Lost 1-2 | -181464 |
| 3standard | 985 | Co, Christopher (1465) | Lost 1-2 | -181446 |
| 4standard | 978 | Rojas, Cesar (1447) | Won 2-0 | +181464 |
| top | average opponent: 1473record: 1-3 | new rating: 1464 | ||