McGrath, Colin
Current rating: 1572
Record: 17-14
| Grand Prix Hartford 2018 (modern) | starting rating: 1571 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 54 | Delvalle, Joseph (1521) | Won 2-0 | +171588 |
| 2modern | 46 | Azuelos, Charles (1500) | Won 2-1 | +161604 |
| 3modern | 246 | Twist, Lukas (1645) | Won 2-0 | +191623 |
| 4modern | 132 | Phillips, Cassandra (1580) | Lost 0-2 | -191604 |
| 5modern | 367 | Schrantz, Mac (1866) | Lost 0-2 | -131591 |
| 6modern | 371 | Dise, Matthew (1522) | Lost 0-2 | -191572 |
| top | average opponent: 1605record: 3-3 | new rating: 1572 | ||
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1580 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 349 | Rodis, Zachary (1500) | Lost 1-2 | -191561 |
| 2sealed | 644 | Washington, William (1427) | Won 2-0 | +161577 |
| 3sealed | 649 | Allegood, Jeremy (1428) | Lost 0-2 | -211556 |
| 4sealed | 749 | Dorohovich, John (1542) | Won 2-0 | +181574 |
| 5sealed | 592 | Cooper, Dustin (1500) | Won 2-0 | +161590 |
| 6sealed | 368 | Deslippe, Dan (1518) | Lost 1-2 | -191571 |
| top | average opponent: 1486record: 3-3 | new rating: 1571 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 747 | Taylor, Dennis (1589) | Lost 1-2 | -161465 |
| 3standard | 923 | Doolittle, Lawrence (1504) | Won 2-0 | +191484 |
| 4standard | 770 | Folinus, Jeff (1732) | Won 2-0 | +231507 |
| 5standard | 780 | Osso, Stephen (1489) | Won 2-0 | +171524 |
| 6standard | 672 | Finseth, Arlen B (1525) | Lost 0-2 | -181506 |
| 7standard | 729 | Wetzel, Aaron (1591) | Won 2-0 | +201526 |
| 8standard | 661 | Viaene, Niels (1812) | Won 2-0 | +231549 |
| 9standard | 669 | Chevrette, Paul R (1577) | Won 2-1 | +181567 |
| 10standard | 48 | Scherer, Caleb (1602) | Lost 1-2 | -171550 |
| 11standard | 96 | Sinner, Denis (1772) | Won 2-1 | +221572 |
| 12standard | 69 | Westnedge, Adam (1652) | Lost 0-2 | -171555 |
| 13standard | 78 | Bauman, Michael (1633) | Won 2-1 | +201575 |
| 14standard | 59 | Andrews, Jonathan R (1608) | Won 2-1 | +181593 |
| 15standard | 44 | Nakamura, Shuhei (1869) | Won 2-1 | +231616 |
| 16standard | 43 | Winters, John (1650) | Lost 0-2 | -171599 |
| 17standard | 50 | Preston, Derek (1573) | Lost 1-2 | -191580 |
| top | average opponent: 1636record: 10-6 | new rating: 1580 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 136 | Jack, Nathaniel (1470) | Lost 0-2 | -191481 |
| 2sealed | 261 | Mcgrath, Matthew (1481) | Won 2-0 | +181499 |
| 3sealed | 169 | O'Dowd, Brendan P (1500) | Lost 0-2 | -181481 |
| top | average opponent: 1483record: 1-2 | new rating: 1481 | ||