My son turned 11 last month. He pitched his best game on 11 DEC, a complete 6-innings game, 3 runs, 77 pitches. His fast ball that day was ~66-68 MPH (calculated distance/time) including in the 6th inning.
In the past some of you have commented that he needed to get his hip moving to home earlier. He seems to be doing that now.
What do you see that he can do to improve AND consistenly keep the ball down?