Originally Posted by Delaware_Diamonds_8:
Would it still be ok if I just used 6 oz and 4 oz balls like other users said to do?
What is your goal for using 4oz and 6oz balls? Strength? Velocity? warmup? stretching? My son uses 4oz and 6oz balls for underload/overload training - only. This assumes that you're in condition for pitching hard as underload/overload training requires throwing with max effort (i.e. throw as hard as you can with control), same as underload/overload training for hitting or running.