Stupfel, John T
Current rating: 1417
Record: 3-8
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 171 | Song, Michael (1500) | Lost 1-2 | -171411 |
| 2legacy | 508 | Sellers, Kevin (1482) | Won 2-1 | +201431 |
| 3legacy | 515 | Mee, Jerry (1500) | Lost 1-2 | -171414 |
| 4legacy | 609 | Vanegas, Orlando (1481) | Won 2-0 | +191433 |
| 5legacy | 606 | Rolko, Charles (1521) | Lost 0-2 | -161417 |
| average opponent: 1497record: 2-3 | new rating: 1417 | |||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 737 | Griffith Iii, Raymiond (1500) | Lost 0-2 | -181482 |
| 2standard | 1016 | Willrich, Gregory (1482) | Lost 1-2 | -181464 |
| 3standard | 975 | Kosolwattana, Suppanat (1464) | Won 2-1 | +181482 |
| 4standard | 959 | Wang, Jacky (1482) | Lost 0-2 | -181464 |
| 5standard | 964 | Guttilla, Nicholas (1464) | Lost 1-2 | -181446 |
| 6standard | 917 | Pike, Chris (1446) | Lost 0-2 | -181428 |
| average opponent: 1473record: 1-5 | new rating: 1428 | |||