Porreca, Stephen
Current rating: 1456
Record: 13-17
| Grand Prix Dallas-Fort Worth 2016 (modern) | starting rating: 1422 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 128 | Meighan, Vernon (1500) | Lost 0-2 | -161406 |
| 2modern | 720 | Maurer, Matthew (1408) | Won 2-0 | +181424 |
| 3modern | 543 | Piwetz, Ron (1505) | Won 2-0 | +191443 |
| 4modern | 435 | Evans, Gage (1472) | Won 2-0 | +191462 |
| 5modern | 133 | Kalbus, Wes (1798) | Lost 0-2 | -121450 |
| 6modern | 412 | Venetucci, Joseph (1518) | Won 2-0 | +191469 |
| 7modern | 251 | Zettel, Charles (1542) | Lost 0-2 | -171452 |
| 8modern | 369 | Lim, Guo Quan (1531) | Won 2-1 | +201472 |
| 9modern | 311 | Blackmor, Jason (1583) | Lost 0-2 | -161456 |
| top | average opponent: 1540record: 5-4 | new rating: 1456 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 156 | Adgie, Zachary (1502) | Lost 1-2 | -171418 |
| 2sealed | 673 | Bransford, Todd (1485) | Won 2-0 | +191437 |
| 3sealed | 630 | Howe, Blake (1599) | Lost 0-2 | -151422 |
| top | average opponent: 1528record: 1-2 | new rating: 1422 | ||
| Grand Prix Dallas-Fort Worth 2015 (ORI limited) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 4 | Yee, David (1499) | Lost 0-2 | -171452 |
| 2sealed | 557 | Mendiola, Gin (1482) | Won 2-0 | +181470 |
| 3sealed | 482 | Evans, Chris N (1463) | Lost 0-2 | -181452 |
| 4sealed | 690 | Deerwester, Isaac (1505) | Lost 0-2 | -171435 |
| top | average opponent: 1487record: 1-3 | new rating: 1435 | ||
| Grand Prix San Antonio 2014 (KTK standard) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 242 | Fabilenia, Nathan (1500) | Won 2-1 | +191467 |
| 2standard | 60 | Minchew, Joshua (1429) | Won 2-0 | +181485 |
| 3standard | 99 | Yocum, Sonny (1536) | Won 2-1 | +191504 |
| 4standard | 33 | Curry, Steven (1533) | Lost 1-2 | -181486 |
| 5standard | 122 | Mangione, Michael (1442) | Lost 1-2 | -191467 |
| 6standard | 277 | Phillips, Joshua (1603) | Won 2-1 | +211488 |
| 7standard | 139 | Flores, Christopher (1443) | Lost 0-2 | -191469 |
| top | average opponent: 1498record: 4-3 | new rating: 1469 | ||
| Grand Prix Dallas-Fort Worth 2013 (THS standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 269 | Kunning, Lauryn (1531) | Lost 0-2 | -171446 |
| 2standard | 391 | Dobmeyer, Collin (1518) | Won 2-1 | +191465 |
| 3standard | 375 | Usey, Chase (1464) | Lost 1-2 | -181447 |
| 4standard | 451 | Baxter, Steven T (1483) | Won 2-0 | +191466 |
| 5standard | 342 | Baquero, Andres (1484) | Lost 0-2 | -181448 |
| top | average opponent: 1496record: 2-3 | new rating: 1448 | ||
| Grand Prix Houston 2013 (DGM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 10 | Saucier, Brandon J (1500) | Lost 0-2 | -181482 |
| 2sealed | 244 | Nguyen, Joe (1422) | Lost 0-2 | -191463 |
| top | average opponent: 1461record: 0-2 | new rating: 1463 | ||