The days of measuring for first downs manually isn't over yet, but the NFL is moving closer to that point. The league has been testing optical tracking as a way to replace the chain gang as the ...

The NFL’s “Chain Gang” could be on the way out in 2024. The league will test optical tracking for line-to-gain rulings this preseason, according to CBSSports.com’s Jonathan Jones. The reports adds if ...

The NFL’s method for measuring first downs — two bright orange sticks and a chain — could soon be getting a technological upgrade. The league plans to test optical tracking for line-to-gain rulings in ...

The National Football League plans to experiment with optical tracking technology this preseason, a move that could eventually make the league's sideline chain gang obsolete, according to sources in ...

NFL referee Walt Anderson spots the ball after measuring with the chains during a game between the San Francisco 49ers and Arizona Cardinals. / Mark J. Rebilas-USA TODAY Sports "Bringing out the ...

The NFL will test an optical tracking system for line-to-gain rulings this preseason, Jonathan Jones of CBS Sports reports. If all goes well, the league will implement the technology for the regular ...