Complex sentence: Born in Manhattan, New York City, and raised in nearby Mount Vernon, Singleton played both baseball and basketball in high school, and also played baseball in the Bronx Federation League at Macombs Dam Park, across the street from Yankee Stadium.
Split into simpler sentences: Born in Manhattan, New York City, and raised in nearby Mount Vernon, Singleton played both baseball and basketball in high school. He also played baseball in the Bronx Federation League at Macombs Dam Park, across the street from Yankee Stadium.