Southard, Mackensie
Current rating: 1597
Record: 11-7
| Grand Prix Portland 2013 (modern) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 113 | Smith, Russell (1471) | Won 2-0 | +171550 |
| 2modern | 113 | Heitkamp, Russ (1727) | Won 2-0 | +211571 |
| 3modern | 113 | Selsing, Nicholas (1483) | Lost 1-2 | -201551 |
| 4modern | 113 | Jacobson, Mary (1692) | Lost 1-2 | -151536 |
| 5modern | 113 | Adams, Jeremy E (1504) | Won 2-0 | +171553 |
| 6modern | 113 | Hatch, Gregory (1741) | Lost 1-2 | -141539 |
| 7modern | 113 | Sonderland, Daniel (1548) | Won 2-1 | +181557 |
| 8modern | 113 | Wade, Will (1520) | Won 2-1 | +171574 |
| 9modern | 113 | Manders, Mitchell (1828) | Won 2-0 | +231597 |
| average opponent: 1613record: 6-3 | new rating: 1597 | |||
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 489 | Ryan, Michael P (1500) | Won 2-0 | +181518 |
| 2sealed | 316 | Bjerke, Anson (1489) | Won 2-0 | +171535 |
| 3sealed | 88 | Scott, Andrew (1536) | Won 2-1 | +181553 |
| 4sealed | 35 | Vidugiris, Gaudenis (2106) | Lost 0-2 | -81545 |
| 5sealed | 128 | Mitchell, Davin (1488) | Won 2-0 | +171562 |
| 6sealed | 165 | Reynolds, David (1501) | Lost 0-2 | -201542 |
| 7sealed | 141 | Toelken, Austin (1610) | Won 2-0 | +201562 |
| 8sealed | 125 | Juza, Martin (1728) | Lost 0-2 | -151547 |
| 9sealed | 136 | Toussaint, Francis (1769) | Lost 0-2 | -141533 |
| average opponent: 1636record: 5-4 | new rating: 1533 | |||