I watched this happen and here were some changes that had occurred proceeding it:
Using pickups to have a couple extra players and benching regulars.
Signing a new player who wasn't up to par, and the players tell you they don't want.
Pulling players mid inning without an explanation (even after the game or at the practice)
Changing what works
Reserve some practice time for fun physical activity-warm up with frisbee toss simulating throwing the hands, mini footballs for hand-eye, tennis balls for fielding, etc.
Observe the player interaction, you might have someone causing a rift. If your DD is on the team, might need to have an impartial party keep an eye out.
Using pickups to have a couple extra players and benching regulars.
Signing a new player who wasn't up to par, and the players tell you they don't want.
Pulling players mid inning without an explanation (even after the game or at the practice)
Changing what works
Reserve some practice time for fun physical activity-warm up with frisbee toss simulating throwing the hands, mini footballs for hand-eye, tennis balls for fielding, etc.
Observe the player interaction, you might have someone causing a rift. If your DD is on the team, might need to have an impartial party keep an eye out.