Complex sentence: Herbert Jefferis Pennock (February 10,1894--January 30,1948) was a left-handed Major League Baseball pitcher best known for his time spent with the star-studded New York Yankee teams of the mid to late 1920s and early 1930s.
Split into simpler sentences: Herbert Jefferis Pennock (February 10,1894--January 30,1948) was an American professional baseball pitcher. He is best known for his time spent with the star-studded New York Yankee teams of the mid to late 1920s and early 1930s.