What event is used to measure performance in football games?

The quarter is a fundamental measurement of time in football games, consisting of four segments during which the teams compete. Each quarter lasts for 15 minutes in professional football, and the overall performance of teams during these intervals is assessed based on their scoring, strategy, and execution of plays.

Measuring performance in terms of scoring, possession, and overall gameplay occurs throughout these quarters, which are crucial for determining the outcome of the game. The halftime show, while entertaining, does not contribute to measuring performance; touchdowns are points scored but are only a part of the overall game strategy; and first downs indicate progress but also do not encompass the entire performance throughout a game's timeframe. Hence, the quarter serves as the standard measure for evaluating how teams perform during the game.