Making plays for the football team

In a certain day, after his grandfather, one of the coaches of the ATM (Texas A&M University) had passed away. Two players were in the locker room before a practice day while the coaches were creating 20 plays to the playbook, the players were asked to create 6, but one thing that they didn't know was that making a play is not that easy because you have to pay attention on what the 22 players are gonna do. One of the two players were the grandson of the coach who passed away.