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This story[1] shows the prosthetic that he received at the time of his injury, but it does not have a hand that can grip a baseball. 1: http://abcnews.go.com/U

• maxerickson 9y ago
  There's really no information given about whether he continued to use a hook or whether he is using a more advanced prosthetic. Not being able to throw a baseball could still be a limitation of a more advanced prosthetic.