I found a web page here with great information about the teams in the West Central Missouri Conference, and it had the Harrisonville game information for 2004-2006 also. You can see their last loss was September 1, 2005 against Belton. Belton is a Class 5 school while Harrisonville is a Class 3 school (the bigger the class number, the bigger the school). The last 4 games of each year were playoff games. In 2004, they lost the MO Championship game, but they won in 2005 and 2006.
