Duke, John
Current rating: 1442
Record: 6-11
| Grand Prix Dallas-Fort Worth 2013 (THS standard) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 166 | Nguyen, David (1663) | Won 2-1 | +231434 |
| 2standard | 179 | Peralez, Joey (1542) | Lost 0-2 | -161418 |
| 3standard | 353 | Stone, David (1468) | Won 2-0 | +181436 |
| 4standard | 333 | Christopher, Trevino (1519) | Won 2-1 | +201456 |
| 5standard | 191 | Ochoa, Dustin (1816) | Lost 1-2 | -121444 |
| 6standard | 228 | Davis, Aaron (1682) | Won 2-0 | +231467 |
| 7standard | 215 | Lalague, Marc (1821) | Lost 1-2 | -121455 |
| 8standard | 244 | Landriz, Erik (1737) | Lost 0-2 | -131442 |
| average opponent: 1656record: 4-4 | new rating: 1442 | |||
| Grand Prix San Antonio 2012 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 2 | Linn, Ryan (1500) | Lost 0-2 | -181482 |
| 2standard | 297 | Matthews, Odos (1552) | Won 2-0 | +191501 |
| 3standard | 186 | Evetts, Kevin (1501) | Lost 1-2 | -181483 |
| 4standard | 318 | Griffith, Brenden (1481) | Lost 1-2 | -181465 |
| 5standard | 306 | GONZALEZ, MATTHEW (1465) | Lost 0-1 | -181447 |
| 6standard | 290 | Elguea, Austin (1446) | Lost 0-2 | -181429 |
| 7standard | 243 | Bizzell, Matt (1428) | Lost 0-2 | -181411 |
| 8standard | 203 | Mayall, Courtney (1407) | Won 2-0 | +181429 |
| 9standard | 177 | Torres, Josue (1429) | Lost 0-2 | -181411 |
| average opponent: 1468record: 2-7 | new rating: 1411 | |||