Complex sentence: Grover Cleveland "Old Pete" Alexander (February 26,1887--November 4,1950) was a Major League Baseball pitcher for the Philadelphia Phillies, Chicago Cubs, and St. Louis Cardinals.
Split into simpler sentences: Grover Cleveland "Old Pete" Alexander (February 26,1887--November 4,1950) was an American professional baseball pitcher. He played in Major League Baseball for the Philadelphia Phillies, Chicago Cubs, and St. Louis Cardinals.