When is the practice squad officially established?

The practice squad is officially established the day after the last preseason game. This timing allows teams to finalize their regular season rosters after the conclusion of the preseason, ensuring that they have the opportunity to develop additional players who may not be part of the 53-man active roster. The formation of the practice squad right after the last preseason game provides teams with flexibility, as they can immediately add athletes they believe have potential and need further development or may need to fill in for injuries during the regular season. This timing aligns with teams' overall roster strategies as they prepare for the upcoming regular season.