Miguel Sano obliterated a ball into outer space on Wednesday -- crushing the piece of cowhide nearly 500 feet -- and afterward, he dedicated the moon shot to a fan he had drilled in the head earlier in the night.
The story is pretty heartwarming ... before the Twins' game against the Red Sox at Fenway Park -- Sano felt awful after he hit a batting practice homer that cracked a young fan in the head.
28-year-old Miguel felt so bad .