Petagna, Ralph
Current rating: 1444
Record: 11-15
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1437 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 617 | Stilwell, Chris (1500) | Lost 0-2 | -171420 |
| 2sealed | 671 | Herr, Briana (1482) | Won 2-0 | +201440 |
| 3sealed | 626 | Coursey, Benjamin (1378) | Won 2-0 | +161456 |
| 4sealed | 554 | Hocking, Brendan (1518) | Won 2-0 | +201476 |
| 5sealed | 494 | Zarmakupis, Adam J (1536) | Lost 0-2 | -171459 |
| 6sealed | 560 | Kane, DeWitt (1660) | Lost 0-2 | -151444 |
| top | average opponent: 1512record: 3-3 | new rating: 1444 | ||
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 233 | Rodriguez, Alex O (1500) | Lost 0-2 | -171453 |
| 2extended | 334 | Torres, Sergio (1481) | Lost 1-2 | -181435 |
| 3extended | 408 | McLain, Josh (1464) | Won 2-0 | +191454 |
| 4extended | 418 | Hartman, Dan (1482) | Lost 0-2 | -181436 |
| 5extended | 396 | Patterson, Tom (1464) | Won 2-0 | +191455 |
| 6extended | 303 | Baldasari, Antonino (1482) | Lost 1-2 | -181437 |
| top | average opponent: 1479record: 2-4 | new rating: 1437 | ||
| Grand Prix New Jersey 2006 (TSP limited) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 181 | Corley, Michael (1518) | Lost 1-2 | -181489 |
| 2sealed | 297 | Lind, Sean (1429) | Won 2-0 | +171506 |
| 3sealed | 239 | Lewis, Mark (1448) | Won 2-0 | +171523 |
| 4sealed | 138 | Calder, Paul (1556) | Lost 0-2 | -181505 |
| 5sealed | 286 | Shaheen, Anthony (1565) | Lost 0-2 | -171488 |
| 6sealed | 258 | Carrier, Derek R (1481) | Lost 1-2 | -181470 |
| top | average opponent: 1499record: 2-4 | new rating: 1470 | ||
| Grand Prix New Jersey 2004 (Mirrodin block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 22 | Ferranti, Jack (1500) | Won 2-0 | +181518 |
| 2block | 105 | Smith, Joseph (1518) | Won 2-0 | +181536 |
| 3block | 66 | Devonshire, Max (1535) | Won 2-1 | +181554 |
| 4block | 77 | Piekarski, Chris (1570) | Won 2-1 | +181572 |
| 5block | 12 | Lebedowicz, Osyp (2051) | Lost 1-2 | -101562 |
| 6block | 46 | Bennett, Ian (1504) | Lost 0-2 | -191543 |
| 7block | 158 | Bachmann, Timothy (1503) | Lost 1-2 | -181525 |
| 8block | 178 | Levine, Andrew (1525) | Lost 0-2 | -181507 |
| top | average opponent: 1588record: 4-4 | new rating: 1507 | ||