McCarthy, Stephen
Current rating: 1549
Record: 20-21-1
| Grand Prix Atlantic City 2015 (DTK limited) | starting rating: 1555 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 150 | Mulvanerton, Ryan (1500) | Lost 0-2 | -191536 |
| 2sealed | 462 | Anderson, Kelly (1523) | Won 2-1 | +171553 |
| 3sealed | 616 | Eads, William (1450) | Won 2-1 | +171570 |
| 4sealed | 411 | Crawford, Scott (1507) | Lost 1-2 | -201550 |
| 5sealed | 502 | Dong, Michael (1504) | Won 2-1 | +181568 |
| 6sealed | 401 | Tepel, Glenn (1518) | Lost 1-2 | -191549 |
| top | average opponent: 1500record: 3-3 | new rating: 1549 | ||
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1492 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 367 | Moran, Nate (1465) | Won 2-0 | +171509 |
| 2sealed | 367 | Montalvo, Radames (1466) | Won 2-0 | +171526 |
| 3sealed | 318 | Favretto, Dylan (1518) | Won 2-1 | +181544 |
| 4sealed | 163 | Ravitz, Joshua (1968) | Lost 0-2 | -101534 |
| 5sealed | 381 | Pastore, Kellen (1519) | Won 2-1 | +171551 |
| 6sealed | 212 | Langer, Brian (1650) | Lost 0-2 | -161535 |
| 7sealed | 298 | Brock, Kyle (1631) | Won 2-1 | +201555 |
| 8sealed | 204 | Damiano III, Salvatore (1604) | Won 0-0 | +191574 |
| 9sealed | 134 | Smith, Zacharie (1516) | Lost 0-2 | -191555 |
| top | average opponent: 1593record: 6-3 | new rating: 1555 | ||
| Grand Prix Toronto 2006 (DIS limited) | starting rating: 1413 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 158 | Meier, Dave (1500) | Won 2-0 | +191432 |
| 2sealed | 64 | Harvie, Donovan (1536) | Won 2-1 | +201452 |
| 3sealed | 46 | Prosak, Doug (1514) | Won 2-0 | +191471 |
| 4sealed | 17 | Jonsson, Anton (1925) | Lost 1-2 | -101461 |
| 5sealed | 40 | Phillips, Cedric (1621) | Won 2-0 | +211482 |
| 6sealed | 60 | Douglass, Morgan (1807) | Won 2-0 | +241506 |
| 7sealed | 32 | Scheel, Brandon (1655) | Lost 0-2 | -161490 |
| 8sealed | 46 | Herberholz, Mark (2041) | Won 2-1 | +281518 |
| 9draft | 27 | Kowal, Brian (1536) | Lost 1-2 | -181500 |
| 10draft | 12 | Ferneyhough, Michael (1542) | Lost 0-2 | -171483 |
| 11draft | 1 | Bailly, Henri (1476) | Won 2-0 | +181501 |
| 12draft | 20 | Westfall, Matthew (1738) | Won 2-1 | +221523 |
| 13draft | 3 | Krakower, Gary (1791) | Lost 0-2 | -131510 |
| 14draft | 14 | Voyer-Perrault, Gaetan (1519) | Lost 0-2 | -181492 |
| top | average opponent: 1657record: 8-6 | new rating: 1492 | ||
| Grand Prix Columbus 2004 (DST limited) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 28 | Rietzl, Paul (1920) | Lost 1-2 | -101424 |
| 5sealed | 144 | Gravlin, Andrew (1575) | Lost 1-2 | -151409 |
| 6sealed | 172 | Ball, Thomas (1517) | Won 2-0 | +201429 |
| 7sealed | 110 | Huang, Don (1544) | Lost 0-2 | -161413 |
| top | average opponent: 1639record: 1-3 | new rating: 1413 | ||
| Grand Prix Boston 2003 (LGN limited) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 13 | Choma, Tom (1517) | Lost 1-2 | -171450 |
| 3sealed | 178 | Lipczynski, Aaron (1549) | Lost 0-2 | -161434 |
| top | average opponent: 1533record: 0-2 | new rating: 1434 | ||
| Grand Prix Philadelphia 2002 (ONS rochester) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 137 | Choma, Tom (1500) | Won 2-0 | +191482 |
| 3sealed | 27 | Wagner, Eric (1536) | Lost 1-2 | -171465 |
| 4sealed | 158 | Menard, Chad (1526) | Won 2-1 | +191484 |
| 5sealed | 51 | Olsen, James (1535) | Lost 0-2 | -171467 |
| top | average opponent: 1524record: 2-2 | new rating: 1467 | ||
| Grand Prix Boston 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 155 | Dailey Jr., William (1464) | Lost 0-2 | -191481 |
| 2sealed | 181 | Strucinski, Jason (1482) | Lost 1-2 | -181463 |
| 3sealed | 226 | Schock, Rosco (1464) | Draw 1-1 | 01463 |
| top | average opponent: 1470record: 0-2-1 | new rating: 1463 | ||