Complex sentence: In 1961, Wide World of Sports covered a bowling event in which Roy Lown beat Pat Patterson, it was so successful that in 1962, ABC Sports began covering the Pro Bowlers Tour.
Split into simpler sentences: In 1961, Wide World of Sports covered a bowling event in which Roy Lown beat Pat Patterson. The broadcast was so successful that in 1962, ABC Sports began covering the Pro Bowlers Tour.