McGarrah, Michael
Current rating: 1605
Record: 24-18-1
| Grand Prix Pittsburgh 2018 (DOM standard) | starting rating: 1619 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 192 | Pusinsky, Dylan (1500) | Lost 0-2 | -201599 |
| 2standard | 215 | Nightingale, Steven (1482) | Won 2-0 | +161615 |
| 3standard | 250 | Batchelder, James (1364) | Won 2-0 | +131628 |
| 4standard | 260 | May, Tony (1519) | Won 2-0 | +161644 |
| 5standard | 146 | Bishop, Jesse (1597) | Lost 1-2 | -191625 |
| 6standard | 279 | Goode, Kevin (1513) | Lost 1-2 | -201605 |
| top | average opponent: 1496record: 3-3 | new rating: 1605 | ||
| Grand Prix Pittsburgh 2017 (AER standard) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 286 | Walker, Jacob (1499) | Won 2-0 | +171559 |
| 2standard | 73 | Betchel, Kyle (1518) | Won 2-0 | +171576 |
| 3standard | 30 | Birrell, Ian (1744) | Won 2-1 | +211597 |
| 4standard | 35 | Gervasi, Bronson (1630) | Won 2-0 | +191616 |
| 5standard | 61 | Gereffi, Clay (1626) | Won 2-0 | +181634 |
| 6standard | 9 | Dowling, Michael (1624) | Lost 0-2 | -181616 |
| 7standard | 71 | Campbell, Eric (1640) | Lost 0-2 | -181598 |
| 8standard | 179 | Mascioli, Chris (1781) | Lost 1-2 | -141584 |
| 9standard | 301 | Tardif, David (1486) | Won 2-1 | +161600 |
| 10standard | 714 | Springer, Harry (1490) | Won 2-0 | +161616 |
| 11standard | 648 | Hagen, Jacob (1795) | Lost 1-2 | -151601 |
| 12standard | 674 | Sauer, John (1599) | Won 2-0 | +181619 |
| 13standard | 646 | Chen, Xin [USA] (1611) | Lost 1-2 | -181601 |
| 14standard | 657 | Scalmato, Anthony (1559) | Draw 1-1 | -11600 |
| 15standard | 664 | Vaid, Akhil (1644) | Won 2-1 | +191619 |
| top | average opponent: 1616record: 9-5-1 | new rating: 1619 | ||
| Grand Prix Philadelphia 2012 (RTR limited) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 299 | Whitney, Thomas E (1500) | Won 2-1 | +171560 |
| 2sealed | 159 | Frayman, Igor (1756) | Lost 0-2 | -141546 |
| 3sealed | 260 | Beaupit, Ryan (1475) | Won 2-1 | +161562 |
| 4sealed | 194 | Herr, Drew (1462) | Won 2-0 | +171579 |
| 5sealed | 203 | Moreno, Daniel (1559) | Lost 1-2 | -191560 |
| 6sealed | 172 | Zappacosta, Joe (1543) | Lost 1-2 | -181542 |
| top | average opponent: 1549record: 3-3 | new rating: 1542 | ||
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1548 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 170 | Heilker, David (1552) | Lost 0-2 | -181530 |
| 2standard | 473 | B., Douglas (1483) | Won 2-1 | +171547 |
| 3standard | 473 | Wasser, Dave (1483) | Lost 1-2 | -191528 |
| 4standard | 607 | Stitt, Leroy (1482) | Won 2-1 | +171545 |
| 5standard | 387 | Walker, Jacob (1500) | Won 2-1 | +171562 |
| 6standard | 242 | Musser, Dan (1614) | Won 2-1 | +191581 |
| 7standard | 186 | Acosta, Christian (1537) | Lost 1-2 | -191562 |
| 8standard | 268 | Snazel, Nicole (1501) | Lost 1-2 | -191543 |
| top | average opponent: 1519record: 4-4 | new rating: 1543 | ||
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 413 | Rangel, Joshua (1482) | Lost 1-2 | -181482 |
| 2sealed | 635 | Tomblinson, Richard (1379) | Won 2-0 | +161498 |
| 3sealed | 587 | Respet, Greg (1449) | Won 2-0 | +171515 |
| 4sealed | 511 | Sullivan, Patrick (1879) | Won 2-0 | +241539 |
| 5sealed | 490 | Jacob, Michael (1908) | Lost 0-2 | -111528 |
| 6sealed | 557 | Yoder, Scott (1437) | Won 2-1 | +161544 |
| 7sealed | 541 | Ma, Thomas (1656) | Won 2-0 | +201564 |
| 8sealed | 454 | Valenti, Christian (1645) | Lost 1-2 | -161548 |
| top | average opponent: 1604record: 5-3 | new rating: 1548 | ||