When Juan Campiz steps up to home plate at Miami Lakes Optimist Park, opponents have to be ready. The nimble athlete swings the bat as if he had played pro ball. And he can field and catch, too. No one would guess that Campiz is 93-years-old. Campiz is one of the Geezers, a group of 30 men, mostly retirees, who gather two mornings each week to play softball in the park. They follow Geezer Ball rules, which means they don’t run around...