I-formation is a football offensive formation where the quarterback is positioned behind the center, with a fullback and a tailback lined up directly behind him. This setup creates a strong running game, as it allows for multiple options in both running and passing plays. The fullback often serves as a lead blocker, helping to clear a path for the tailback. In I-formation, the players are arranged in a straight line, resembling the letter "I." This formation is commonly used in American football and is effective for short-yardage situations. Coaches often choose I-formation to establish a physical running attack and control the game's tempo.