Maas, Jeffrey
Current rating: 1550
Record: 21-20-1
| Grand Prix Las Vegas 2018 (limited) (DOM limited) | starting rating: 1565 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 150 | Castro Saa, Eduardo (1727) | Lost 1-2 | -151550 |
| 3sealed | 713 | Simon, William (1464) | Won 2-1 | +161566 |
| 4sealed | 335 | Oien, Christopher (1674) | Lost 1-2 | -161550 |
| top | average opponent: 1622record: 1-2 | new rating: 1550 | ||
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1584 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 212 | Shannon, Charlie (1518) | Lost 0-2 | -191565 |
| top | record: 0-1 | new rating: 1565 | ||
| Grand Prix Oklahoma City 2017 (modern) | starting rating: 1583 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 140 | Gardea, Ramon (1478) | Won 2-0 | +161599 |
| 2modern | 289 | Carrette, Jeremy (1497) | Won 2-1 | +161615 |
| 4modern | 128 | Wolff, Michael (1552) | Lost 0-2 | -191596 |
| 5modern | 206 | Jansen, Adam (1944) | Lost 1-2 | -121584 |
| 6modern | 292 | Gallegos, Thomas (1517) | Won 2-0 | +171601 |
| 7modern | 185 | Marklyn, Tyler (1775) | Won 2-1 | +211622 |
| 8modern | 186 | Garcia, Ruben Tadeo (1591) | Lost 0-2 | -191603 |
| 9modern | 168 | Vanoort, Jeffrey (1548) | Lost 1-2 | -191584 |
| top | average opponent: 1613record: 4-4 | new rating: 1584 | ||
| Grand Prix Washington DC 2017 (HOU standard) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 147 | Koziol, Joshua (1384) | Won 2-1 | +151548 |
| 2standard | 283 | Johnson, Angelique (1763) | Won 2-1 | +221570 |
| 3standard | 111 | Pena, Edwin (1685) | Won 2-1 | +201590 |
| 4standard | 187 | Tomajko, Oliver (1893) | Lost 0-2 | -131577 |
| 5standard | 190 | Edwards, Mitchell (1768) | Draw 1-1 | +41581 |
| 6standard | 237 | McCord, Kristopher (1884) | Lost 0-2 | -131568 |
| 7standard | 361 | Mrozek, Tadeusz (1519) | Won 2-1 | +171585 |
| 8standard | 252 | Waters, Josh (1542) | Won 2-1 | +171602 |
| 9standard | 170 | Grabowski, Doug (1507) | Lost 1-2 | -191583 |
| top | average opponent: 1661record: 5-3-1 | new rating: 1583 | ||
| Grand Prix Minneapolis 2017 (HOU standard) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 345 | Bishop, Lucas (1464) | Won 2-0 | +171541 |
| 2standard | 11 | Paulson, Nicholas (1600) | Won 2-1 | +191560 |
| 3standard | 174 | Sauerwein, Joel (1495) | Won 2-1 | +171577 |
| 4standard | 4 | Goodwin, Luke (1681) | Won 2-1 | +201597 |
| 5standard | 44 | Emslander, Grady (1617) | Won 2-1 | +181615 |
| 6standard | 9 | Ward, Daniel (1803) | Won 2-1 | +221637 |
| 7standard | 4 | Locke, Steve (1768) | Lost 0-2 | -161621 |
| 8standard | 37 | Allen, Emory (1642) | Lost 0-2 | -181603 |
| 9standard | 55 | Richey, Richard (1505) | Lost 1-2 | -191584 |
| 10standard | 529 | Hoey, Matthew (1713) | Lost 1-2 | -161568 |
| 11standard | 582 | Hurm, Justin (1549) | Lost 0-2 | -181550 |
| 12standard | 597 | Guan, Thomas Zhennan (1609) | Lost 0-2 | -171533 |
| top | average opponent: 1621record: 6-6 | new rating: 1533 | ||
| Grand Prix Minneapolis 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 56 | Wallaert, Noah (1534) | Won 2-1 | +191519 |
| 2standard | 312 | Burkart, Jonathan (1490) | Lost 1-2 | -191500 |
| 3standard | 373 | Joiner, Rob (1476) | Won 2-1 | +181518 |
| 4standard | 334 | Terveer, Joshua (1476) | Lost 1-2 | -191499 |
| 5standard | 546 | Prestwood, Dave (1530) | Won 2-0 | +181517 |
| 6standard | 313 | Fredrichsen, Drew (1517) | Won 2-0 | +181535 |
| 7standard | 213 | Wise, Steve (1793) | Lost 1-2 | -131522 |
| 8standard | 252 | Slawson, Hank (1658) | Lost 0-2 | -151507 |
| 9standard | 328 | Ankarlo, Dave (1487) | Won 2-0 | +171524 |
| top | average opponent: 1551record: 5-4 | new rating: 1524 | ||