Complex sentence: Roel de Mon (November 5 1919 in Haarlem The Netherlands--November 2 1973 in Haarlem) was a legendary Dutch baseball player, who was said to be the fastest Dutch pitcher of all time.
Split into simpler sentences: Roel de Mon (November 5 1919 in Haarlem The Netherlands--November 2 1973 in Haarlem) was a legendary Dutch baseball player. He was claimed to be the fastest Dutch pitcher of all time.