The Falcons finished strong to defeat the Dons, 21-7.
It was Amador Valley's third straight defeat. They finish the regular season with a 4-6 overall record and a 2-5 record in league play.
The defeat probably means Amador Valley will not be selected for the Division I playoffs.
Foothill ends its season with a 4-6 record overall and 3-4 record in league play. The Falcons were knocked out of playoff contention last week when they lost to Monte Vista High. It's the first time since 1991 they will not be in the post-season.
The game was a tight defensive struggle early on.
The two teams played a scoreless first quarter before Foothill scored a second quarter touchdown and walked into the locker room at halftime with a 7-0 lead.
The Dons, however, scored a tying touchdown in the third quarter to make the score, 7-7.
Foothill, however, scored the final two touchdowns of the game to secure the victory in this annual battle for bragging rights in Pleasanton.