DeBuff, Michael
Current rating: 1540
Record: 18-17-1
| Grand Prix Denver 2019 (M20 standard) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 109 | Malinowski, Mike (1583) | Lost 0-2 | -171516 |
| 3standard | 234 | Connell, Nicholas (1666) | Won 2-0 | +201536 |
| 4standard | 169 | Smith, Barry (1672) | Lost 0-2 | -151521 |
| 5standard | 147 | Woods, George (1502) | Won 2-0 | +181539 |
| 6standard | 101 | Davis, Scott (1603) | Won 2-0 | +191558 |
| 7standard | 101 | Keithley, Gregg (1579) | Lost 1-2 | -181540 |
| top | average opponent: 1601record: 3-3 | new rating: 1540 | ||
| Grand Prix Portland 2018 (modern) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 344 | Peltola, Jason (1346) | Won 2-0 | +161501 |
| 2modern | 99 | Andersen, Blake (1500) | Lost 1-2 | -181483 |
| 3modern | 465 | Johnson, Darren (1498) | Won 2-1 | +181501 |
| 4modern | 518 | Nguyen, Lee Hung (1457) | Won 2-0 | +171518 |
| 5modern | 181 | Angulo, Enrique (1658) | Won 2-0 | +211539 |
| 6modern | 145 | Nagro, Jacob (2077) | Lost 0-2 | -91530 |
| 7modern | 354 | Gottlieb, Bryan (1735) | Lost 0-2 | -141516 |
| 8modern | 328 | Grimes, Sean (1479) | Won 2-0 | +171533 |
| top | average opponent: 1594record: 5-3 | new rating: 1533 | ||
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1306 | Stock, Josh (1500) | Lost 1-2 | -181504 |
| 2modern | 732 | Oshie, Brian (1480) | Lost 1-2 | -191485 |
| top | average opponent: 1490record: 0-2 | new rating: 1485 | ||
| Grand Prix Seattle 2018 (standard) (RIX standard) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 435 | Ramos, Will (1445) | Won 2-0 | +171542 |
| 2standard | 62 | Hyatt, Jeremy (1498) | Won 2-0 | +171559 |
| 3standard | 13 | Lutzi, Brenden (1648) | Lost 0-2 | -161543 |
| 4standard | 438 | Grant, Ricky (1473) | Lost 1-2 | -201523 |
| 5standard | 481 | Neff, Alexander (1486) | Won 2-1 | +181541 |
| 6standard | 406 | Deyoe, Roman (1519) | Lost 1-2 | -191522 |
| top | average opponent: 1511record: 3-3 | new rating: 1522 | ||
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 67 | Ilomin, Kevin (1446) | Won 2-1 | +171539 |
| 2legacy | 363 | Trafton, Cody (1627) | Draw 1-1 | +11540 |
| 3legacy | 350 | Peterson, Kyle (1485) | Lost 1-2 | -191521 |
| 4legacy | 520 | Cornejo, Christopher (1589) | Won 2-1 | +201541 |
| 5legacy | 344 | Atchison, Taylor (1688) | Lost 0-2 | -161525 |
| top | average opponent: 1567record: 2-2-1 | new rating: 1525 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 133 | Martin, Jesse (1555) | Won 2-0 | +191519 |
| 2standard | 173 | Bell, Rebecca (1585) | Lost 0-2 | -171502 |
| 3standard | 444 | Barnes, James (1496) | Won 2-0 | +181520 |
| 4standard | 264 | Parker, Thomas (1607) | Lost 1-2 | -161504 |
| 5standard | 584 | Gillespie, Chris (1505) | Won 2-0 | +181522 |
| 6standard | 316 | Zabawa, Steve (1492) | Won 2-0 | +171539 |
| 7standard | 292 | Hegy, Tyler (1524) | Lost 1-2 | -181521 |
| 8standard | 340 | Orr, Gregory (1449) | Won 2-1 | +171538 |
| 9standard | 188 | Patrick, Blaine (1680) | Lost 0-2 | -161522 |
| top | average opponent: 1544record: 5-4 | new rating: 1522 | ||