Complex sentence: He claimed the U.S. Open title in 1937 and 1938, and was the last to win the U.S. Open while wearing a necktie during play in 1938.
Split into simpler sentences: He claimed the U.S. Open title in 1937 and 1938. He became the last person to win the U.S. Open while wearing a necktie during play in 1938.