Shaffer, Kevin
Current rating: 1505
Record: 12-13-1
| Grand Prix Indianapolis 2016 (modern) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 620 | Martino, Thomas (1415) | Lost 1-2 | -191477 |
| 2modern | 620 | Crow, Jacob (1475) | Won 2-0 | +181495 |
| 3modern | 595 | Snow, Nick (1501) | Won 2-1 | +181513 |
| 4modern | 542 | Klima, Patrick (1506) | Draw 1-1 | 01513 |
| 5modern | 441 | Bartley, Matthew (1852) | Lost 0-2 | -121501 |
| 6modern | 601 | Morrison, Steven (1480) | Won 2-0 | +171518 |
| 7modern | 429 | Hassig, Clark (1486) | Won 2-1 | +181536 |
| 8modern | 300 | Cedeno, Francisco (1588) | Lost 0-2 | -171519 |
| 9modern | 412 | Green, Jeff (1746) | Lost 0-2 | -141505 |
| top | average opponent: 1561record: 4-4-1 | new rating: 1505 | ||
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 108 | Cutler, Tim (1247) | Won 2-0 | +141492 |
| 2sealed | 205 | Fleurant, Jason (1618) | Won 2-1 | +201512 |
| 3sealed | 372 | Gemme, Mike (1605) | Won 2-0 | +201532 |
| 4sealed | 73 | Risner, James (1461) | Lost 1-2 | -201512 |
| 5sealed | 163 | Mangels, Jeffery (1537) | Won 2-0 | +191531 |
| 6sealed | 306 | Berni, Roberto (1520) | Lost 0-2 | -181513 |
| 7sealed | 140 | Dorsett, Zachariah (1603) | Lost 1-2 | -171496 |
| top | average opponent: 1513record: 4-3 | new rating: 1496 | ||
| Grand Prix Indianapolis 2012 (legacy) | starting rating: 1450 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 14 | Sturtz, Ben (1522) | Won 2-1 | +191469 |
| 4legacy | 17 | Edgerle, Nick (1495) | Lost 0-2 | -181451 |
| 5legacy | 279 | Becerra, Patrick (1541) | Lost 0-2 | -161435 |
| 6legacy | 334 | Bogner, Ryan (1654) | Won 2-0 | +221457 |
| 7legacy | 183 | Badgero, Alisha M (1530) | Won 2-1 | +191476 |
| 8legacy | 82 | Behrens, Lance (1506) | Won 2-1 | +191495 |
| 9legacy | 87 | Orlowsky, Evan (1553) | Lost 0-2 | -171478 |
| top | average opponent: 1543record: 4-3 | new rating: 1478 | ||
| Grand Prix San Diego 2011 (ISD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 32 | Parker, Steve (1623) | Lost 1-2 | -161484 |
| 5sealed | 122 | McGown, Zen (1537) | Lost 1-2 | -171467 |
| 6sealed | 134 | Freeman, Marcelino (1490) | Lost 0-2 | -171450 |
| top | average opponent: 1550record: 0-3 | new rating: 1450 | ||