Complex sentence: They have once defeated and knocked Bucheon SK, Chunnam Dragons, Incheon United out of the FA cup, and won over Suwon Samsung Bluewings twice in the cup tournaments.
Split into simpler sentences: They have once defeated and knocked Bucheon SK, Chunnam Dragons, and Incheon United out of the FA cup. They also won over Suwon Samsung Bluewings twice in the cup tournaments.