Guenther, Darren
Current rating: 1455
Record: 3-6
| Grand Prix San Diego 2015 (ORI standard) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 139 | Newkirk, Todd (1455) | Won 2-0 | +191465 |
| 2standard | 40 | Kreger, Adam R (1518) | Won 2-1 | +191484 |
| 3standard | 269 | Nguyen, Justin (1683) | Lost 0-2 | -151469 |
| 4standard | 275 | Clarke, Jonathan (1464) | Lost 0-2 | -181451 |
| 5standard | 496 | Wingert, James (1520) | Won 2-1 | +191470 |
| 6standard | 302 | Grugal, Michael (1601) | Lost 1-2 | -151455 |
| average opponent: 1540record: 3-3 | new rating: 1455 | |||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 157 | Kurz, Michael (1508) | Lost 0-2 | -181482 |
| 2sealed | 309 | O'Brien, Andrew (1496) | Lost 0-2 | -181464 |
| 3sealed | 390 | Edwards, Jeffrey (1463) | Lost 0-2 | -181446 |
| average opponent: 1489record: 0-3 | new rating: 1446 | |||