| 2025 |
| Thu., Oct. 30 | @ Jefferson | L 12-42 | 1st Round Playoffs |
| 2024 |
| Thu., Oct. 31 | @ Brandon Valley | L 6-35 | 1st Round Playoffs |
| 2023 |
| Fri., Oct. 27 | @ Harrisburg | L 7-42 | 1st Round Playoffs |
| 2022 |
| Thu., Oct. 27 | @ Jefferson | L 7-42 | 1st Round Playoffs |
| 2019 |
| Thu., Oct. 31 | @ Lincoln | W 21-6 | 1st Round Playoffs | | Fri., Nov. 8 | @ Brandon Valley | L 13-52 | 2nd Round Playoffs |
| 2018 |
| | vs. | W 49-14 | 1st Round Playoffs | | | vs. | W 28-14 | Semi-finals Playoffs | | | | L 22-28 | Championship Game |
| 2017 |
| | Rapid City Central | W 56-24 | 1st Round Playoffs | | | Roosevelt | W 42-41 | Semi-finals Playoffs | | | | W 21-20 | Championship Game |
| 2016 |
| | vs. | W 53-27 | 1st Round Playoffs | | | vs. | W 24-14 | Semi-finals Playoffs | | | | W 41-31 | Championship Game |
| 2015 |
| | vs. | W 37-3 | 1st Round Playoffs | | | vs. | W 28-20 | Semi-finals Playoffs | | | | W 27-24 | Championship Game |
| 2014 |
| | | L 7-17 | 1st Round Playoffs |
| 2013 |
| | | L 20-28 | 1st Round Playoffs |
| 2012 |
| | | W 48-0 | 1st Round Playoffs | | | | W 49-3 | Semi-finals Playoffs | | | | W 35-20 | Championship Game |
| 2011 |
| | Mitchell | W 24-7 | 1st Round Playoffs | | | Lincoln | W 42-7 | Semi-finals Playoffs | | | Roosevelt | L 17-31 | Championship Game |
| 2010 |
| | Huron | W 35-0 | 1st Round Playoffs | | | Pierre | W 42-0 | 2nd Round Playoffs | | | Lincoln | W 42-0 | Semi-finals Playoffs | | | OGorman | W 33-7 | Championship Game |
| 2009 |
| | vs. Douglas | W 65-0 | 1st Round Playoffs | | | vs. Yankton | W 42-0 | 2nd Round Playoffs | | | vs. Brandon Valley | W 55-10 | Semi-finals Playoffs | | | vs. ACHS | W 27-10 | Championship Game |
| 2008 |
| | vs. Spearfish | W 56-7 | 1st Round Playoffs | | | vs. Brookings | W 34-14 | 2nd Round Playoffs | | | @ OGorman | W 21-14 | Semi-finals Playoffs | | | vs. Lincoln | L 20-27 | Championship Game |
| 2007 |
| | vs. ACHS | W 21-20 | 1st Round Playoffs | | | vs. Yankton | W 49-30 | 2nd Round Playoffs | | | @ Watertown | W 27-17 | Semi-finals Playoffs | | | vs. Roosevelt | L 24-28 | Championship Game |
| 2004 |
| | vs. Yankton | W 35-6 | 1st Round Playoffs | | | vs. Stevens | W 28-27 | 2nd Round Playoffs | | | @ OGorman | L 6-42 | Semi-finals Playoffs |
|
| Sioux Falls Washington Playoff Totals |
| Record |
33-12-0 1398-851 |
| Home Record | 16-2 |
| Away Record | 3-6 |
|
