Can an 11 year old throw a 90 mph fast ball?

The question should be changed from; can an 11 year old throw that hard but if he should throw that hard? Throwing a fastball 90 MPH puts an enormous amount of stress on the arm. An eleven year old is still growing and this will have an effect on bone growth, and damage ligaments and tendons . If I was a coach of a talented 11 year old that could throw the ball this hard I would hold him back on velocity, and concentrate on control, and learning how to pitch.

I agree and some of the best pitchers in the history of the game like greg maddux and tom glavine can barely reach 90. How should a pre-pubescent 11-year old be able to do that.

The answer to the question that was actually asked is no. An 11 year old can't throw that hard.