The Tigers appeared ready for a dogfight, when JR Hill hit D' Andre Thomas for a touchdown pass with :45 seconds left in the first half, tying the game at 14-a-peice.
That was the last glimpse of success Tenaha would have.
The Moguls owned the second half, scoring 28 unanswered to lift their third state title in school history.
Tigers' running back Chavis Gregory rushed the ball 24 times for 116 yards and a touchdown in the loss.
Gregory was outmatched by Munday's Dee Paul, who carried the ball 16 times for 263 yards and three TD's.
Tenaha ends the season with a 10-5 record and a second place finish.
Munday leaves Cowboys stadium with an unblemished 15-0 record and a state title.