The NFL will test a new optical tracking system this preseason that could make first-down chains ... commonly as "chain gangs" or "chain crews", these operators have been part of football since ...

For the 2025 season, the NFL will leave the first-down chains behind, moving to a newer system that utilizes chips to track ...

Kansas City Chiefs' quarterback Patrick Mahomes picks up a first down on an impressive back-handed flip pass to tight end Travis Kelce for a 13-yard gain. 46-yard touchdown! Philadelphia Eagles ...