Schuffenhauer, Derek
Current rating: 1500
Record: 13-13-2
| Grand Prix San Jose 2017 (AER limited) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 176 | Jones, Nicole (1464) | Won 2-0 | +181517 |
| 2sealed | 15 | G, Ansgar (1517) | Won 1-0 | +181535 |
| 3sealed | 97 | Eubank, Cory (1634) | Lost 1-2 | -171518 |
| 4sealed | 482 | Hom, Jonathan (1515) | Lost 1-2 | -181500 |
| 5sealed | 659 | Lam, Patrick (1464) | Won 2-0 | +181518 |
| 6sealed | 520 | Minshall, Mark (1467) | Won 2-0 | +171535 |
| 7sealed | 270 | Russell, Kenny (1616) | Lost 0-2 | -171518 |
| 8sealed | 309 | Yeh, Kenneth (1509) | Lost 0-2 | -181500 |
| top | average opponent: 1523record: 4-4 | new rating: 1500 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 205 | Williams, Jordan (1500) | Lost 0-2 | -181499 |
| 2sealed | 513 | McNiel, Patrick (1449) | Won 2-1 | +171516 |
| 3sealed | 324 | Rowe, Jeffrey (1500) | Won 2-0 | +181534 |
| 4sealed | 339 | Sherburne, Craig (1518) | Lost 1-2 | -191515 |
| 5sealed | 290 | Christensen, Drew (1616) | Lost 0-2 | -161499 |
| top | average opponent: 1517record: 2-3 | new rating: 1499 | ||
| Grand Prix Sacramento 2014 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1136 | Schmidt, Sam (1464) | Lost 1-2 | -191481 |
| 2sealed | 1233 | Boudreau, Beau (1482) | Won 2-1 | +181499 |
| 3sealed | 1190 | Navarro, Denise (1500) | Won 2-0 | +181517 |
| 4sealed | 1110 | Fyfe, Max (1533) | Lost 0-2 | -171500 |
| 5sealed | 1218 | Boyd, Khaatim (1503) | Won 2-1 | +181518 |
| 6sealed | 1151 | Bai, Huaxing (1508) | Won 2-1 | +171535 |
| 7sealed | 1080 | Saugier, Kyle (1518) | Lost 1-2 | -181517 |
| top | average opponent: 1501record: 4-3 | new rating: 1517 | ||
| Grand Prix Oakland 2013 (M14 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 489 | Sanatkar, Eman (1537) | Lost 0-2 | -171483 |
| 2sealed | 637 | Yuen, Norman (1446) | Won 2-0 | +171500 |
| 3sealed | 385 | Froehlich, Whit (1631) | Won 2-1 | +201520 |
| 4sealed | 210 | Williams, Madison (1487) | Lost 1-2 | -181502 |
| 5sealed | 389 | Kirk, Bryan (1500) | Lost 1-2 | -181484 |
| 6sealed | 457 | Reckas, Zach (1463) | Draw 1-1 | -11483 |
| 7sealed | 372 | Tolson, Ralph (1482) | Won 2-0 | +181501 |
| 8sealed | 290 | Yin, Kitty (1419) | Draw 1-1 | -11500 |
| top | average opponent: 1496record: 3-3-2 | new rating: 1500 | ||