You could be right, JJ. But none of Capone's biographers say anything about him being a hotshot baseball player. Here's what Lawrence Bergreen, his most recent biographer, says re. this subject:
"Although he adored the company of sports figures and frequented gyms almost as much as he did brothels, Capone was no athlete. He had excelled at pool in his youth, but since much of his life consisted of eluding his enemies and hiding indoors, he had little interest in exercise."