These have become commonplace. It used to be that every team had a “2-minute drill” for trying to score while milking the clock after the 2-minute warnings occurred at the end of each half. But the idea of going to a quickened pace anytime during a game has achieved wide popularity primarily since the Buffalo Bills enjoyed success with the strategy in the 1990s, when they played in – but lost – four consecutive Super Bowls.
The no-huddle offense may or may not be enlisted to speed things up. Sometimes the main objective is to prevent the defense from making substitutions, such as bringing in an extra defensive back (a so-called 'nickel' back) in passing situations.
