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Gap Schemes 301: Duo Run Delivers Double Teams and Dominance

On3 imageby:Ian Boyd05/17/25

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Kyle Flood
Kyle Flood (Will Gallagher/Inside Texas)

The Duo run scheme is a downhill, power-based concept that creates vertical lanes by using double teams at the line of scrimmage. The running back reads the Mike linebacker to decide whether to bounce outside or cut between the tackles for a decisive, physical gain.

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  • Clarifying the Duo vs. Inside Zone Confusion
    The video distinguishes the often-confused duo and inside zone run schemes. While both involve quick decision-making and similar player movements, the key lies in trajectory and blocking. Texas’s version of duo resembles Tom Herman’s inside zone, emphasizing vertical movement and direct RB reads behind double teams.
  • Decoding the Mechanics of Duo
    Duo focuses on immediate double teams with no pulling linemen, making it simpler and more consistent for linemen of varying physiques. It’s a gap scheme where success hinges on overpowering defenders at specific points, notably with a tight end or receiver supporting the edge block.
  • Double Teams: The Cornerstone of Duo
    The heart of duo lies in its double teams. Texas often aligns offensive personnel to one side (e.g., tight ends and receivers) to dominate that flank and let the RB charge directly behind them. When only one tight end is used, it’s nicknamed “Uno,” highlighting the single double team formation.
  • Game Examples and Execution
    Using examples from Texas vs. Mississippi State, the video shows how double teams break down defenders quickly, allowing linemen to release to the second level. Duo’s success is evident when double teams dominate and force defensive breakdowns. Examples from the red zone show how it ensures goal-line penetration with physical dominance.
  • Duo from Spread Sets
    Teams like LSU in 2019 and Texas in 2022 utilized physical receivers to mimic tight ends and run duo from spread formations. This approach challenges smaller defensive personnel packages, using brute strength and alignment to bulldoze through.

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