Groshong, Brandon
Current rating: 1615
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1570 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 214 | Feng, Nan (1481) | Won 2-0 | +161586 |
| 2sealed | 129 | Tansey, Stephen (1483) | Lost 1-2 | -201566 |
| 3sealed | 249 | Weatherford, Michael (1484) | Won 2-0 | +171583 |
| 4sealed | 212 | Allen, Webb (1542) | Won 2-1 | +171600 |
| 5sealed | 110 | Baker, Michael (1590) | Won 2-0 | +181618 |
| 6sealed | 41 | Crosthwaite, Rodolfo (1555) | Lost 1-2 | -191599 |
| 7sealed | 131 | Hyde, Landry (1604) | Won 2-0 | +181617 |
| 8sealed | 79 | Nance, Hunter (1598) | Lost 1-2 | -191598 |
| 9sealed | 94 | Joly, Randy (1538) | Won 2-0 | +171615 |
| top | average opponent: 1542record: 6-3 | new rating: 1615 | ||
| Grand Prix Los Angeles 2014 (KTK standard) | starting rating: 1555 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 55 | Sanchez, Bryant (1500) | Lost 0-2 | -191536 |
| 2standard | 591 | Bougie, Scott (1482) | Lost 1-2 | -191517 |
| 3standard | 818 | North, Danielle (1464) | Won 2-0 | +171534 |
| 4standard | 666 | Pluntze, Kent (1482) | Won 2-1 | +171551 |
| 5standard | 631 | West, Michael (1505) | Won 2-0 | +181569 |
| 6standard | 367 | Slone, Ryan (1507) | Won 2-0 | +171586 |
| 7standard | 199 | Vallejo Pacheco, Omar (1704) | Lost 0-2 | -161570 |
| top | average opponent: 1521record: 4-3 | new rating: 1570 | ||
| Grand Prix Kansas City 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 28 | Marker, David (1500) | Won 2-0 | +181518 |
| 2modern | 126 | Marfisi, Sarah (1500) | Won 2-0 | +181536 |
| 3modern | 44 | Nichols, Steven (1536) | Won 2-1 | +181554 |
| 4modern | 57 | Kluska, Taylor (1558) | Lost 0-2 | -181536 |
| 5modern | 104 | Muir, Scott (1526) | Lost 1-2 | -181518 |
| 6modern | 193 | Ashline, Cory (1559) | Won 2-0 | +181536 |
| 7modern | 105 | Lamm, Rik (1535) | Won 2-0 | +181554 |
| 8modern | 105 | Ward, Matt C (1531) | Lost 1-2 | -181536 |
| 9modern | 145 | Connell, Zoe (1620) | Won 2-0 | +191555 |
| top | average opponent: 1541record: 6-3 | new rating: 1555 | ||