Before revision: The Tennessee Titans and the Houston Texans in formation before a play in October 2005 Gameplay in American football consists of a series of downs, individual plays of short duration, outside of which the ball is or is not in play.
After revision: The Tennessee Titans and the Houston Texans in formation before a play in October 2005 Gameplay in American Football consists of a series of downs, individual plays of short duration, outside of which the ball is or is not in play.