New York Jets and Cook mutually agree to part ways after a five-month stint.

The decision follows an earlier deal signed in the summer when the Jets were considered Super Bowl contenders.

Cook's performance declined after the regular season began

Breece Hall took on a significant role in the team, receiving a large carry load over Cook.

The separation highlights the shift in Cook's impact on the team's gameplay.

The Jets made a quick decision to reallocate responsibilities in their running game.

Cook's contributions fell short of expectations during the recent season.

The team's move suggests a strategic adjustment to maximize performance.

The decision to part ways was reached on a Tuesday.

The shift in focus may impact the Jets' pursuit of Super Bowl contention.