But then another Shelby player was hurt and the teams played 9-on-9 for the last three minutes of the first half.
The coaches and referees agreed to end the game at halftime.
Shelby started the scoring with a 31-yard field goal by Latrell Sobers to put the Tigers up 3-0. Montague then rattled off 53 unanswered points to walk away with the win.
Quarterback Dylan Stever led the Wildcats with three touchdowns (two passing, one rushing) while Bryce Stark had two touchdown runs and Kenyan Johnston added a punt return touchdown and caught a touchdown pass.
Montague improved to 3-0 overall and 2-0 in conference play. Shelby is now 0-3 and 0-2.