Complex sentence: He signed with the Reading, Pennsylvania team in the Interstate League, earning one of his nicknames with his powerful arm; the Dodgers were sufficiently impressed by his ability that they purchased the entire minor league franchise to acquire him.
Split into simpler sentences: He signed with the Reading, Pennsylvania team in the Interstate League, earning one of his nicknames with his powerful arm. The Dodgers were sufficiently impressed by his ability that they purchased the entire minor league franchise to acquire him.