Willigan
| Annual | Year | Champion | 2nd Place | 3rd Place | Site |
|---|---|---|---|---|---|
| 1st | 2005 | CSD | MSSD | Texas | Riverside, California |
| 2nd | 2006 | MSSD | Texas | Indiana | Austin, Texas |
| 3rd | 2007 | Indiana | CSD | MSSD | Fremont, California |
| 4th | 2008 | Indiana | Florida | Maryland | Indianapolis, Indiana |
| 5th | 2009 | Indiana | Maryland | MSSD | Washington, D.C. |
| 6th | 2010 | Maryland | Texas | CSD | Frederick, Maryland |
| 7th | 2011 | Maryland | CSD | MSSD | Fremont, California |
| 8th | 2012 | Model | CSD | Maryland | Washington, D.C. |
| 9th | 2013 | Model | Maryland | Riverside | Austin, Texas |
| 10th | 2014 | Model | Indiana | Riverside | Riverside, California |
| 11th | 2015 | Indiana | Riverside | Model | Indianapolis, Indiana |
| 12th | 2017 | Texas | CSD | Fremont, California |