Complex sentence: Due to Blue's dunking ability, he was invited to the 1990 NBA slam dunk contest in which he did not take place and was replaced by David Benoit, but did take part in the 1991 event placing fourth.
Split into simpler sentences: Due to Blue's dunking ability, he was invited to the 1990 NBA Slam Dunk Contest in which he did not take place and was replaced by David Benoit. He did take part in the 1991 event placing fourth.