You need to build on the strength developed in pre-season with training that will increase your ability to move a load at high velocity. Power is the combination of strength and speed. Power training requires that you lift lighter weights than you did in the strength phase, yet with explosive intent. You need to rest adequately between repetitions and sets so that each movement is done as fast as possible. The number of sets can be less than phase 1. There is no point to training like this when you're fatigued.
Time of year: late pre-season and in-season
Duration: 4 weeks ongoing
Days per week: 2 to 3
Reps: 8 to 10
Sets: 2 to 3
Rest between repetitions: 10 to 15 seconds
Rest between sets: at least 1 minute or until recovery
Useful Exercises:
Barbell or dumbbell hang clean
Cable push pull
One arm cable raises each arm
Alternate, single-leg medicine ball push press
You be taking this schedule up a notch when you hit the season. After Christmas is a great time to put the gifts to one side, and double up on training sessions - it really does make a difference to your game.