When Corey and Clay get in his truck Corey puts his seat belt on twice.
The first time the refrigerator in Corey's hotel room is shown, it's old and has a spot in the top right corner where something looks scratched out. Later the refrigerator is newer and has a "Do Not Drill" sign in the upper right corner.
In the credits it shows Okmulgee Memorial Hostpital instead of Hospital.
Throughout the first scene when Cory starts coaching the kids' team, a boom mic is clearly visible multiple times in the reflection of his sunglasses.
The back of Cory's baseball card reveals that his character was born and currently resides in Venezuela.