My son is on the high school swim team and in middle school and elementary school would step to the side and let a kick ball kicked directly at him roll on by and watch it go past. He also does not do any sport with a ball or any sport where a team is counting on him (other than swimming a leg in a relay, he can handle that).

He would join cross country but the season here is the same as high school swim. He HATES water polo.

I know part of his is really slow processing so missiles (balls) coming at him at high rates of speed are bad in that his reaction time is about three minutes too late.