Complex sentence: He played for 15 seasons in the Major League Baseball and has played 4 seasons of independent and Mexican League baseball since leaving MLB.Is considered by many to be the greatest player in the history of Major League Baseball.
Split into simpler sentences: He played for 15 seasons in the Major League Baseball and has played 4 seasons of independent and Mexican League baseball since leaving MLB. He considered by many to be the greatest player in the history of Major League Baseball.