Complex sentence: Apart from his success as a tag team wrestler, Hardy has won various singles championships, having held the ECW, Hardcore, European, Cruiserweight, and United States Championship on one occasion each.
Split into simpler sentences: Apart from his success as a tag team wrestler, Hardy held the ECW Championship once. He has won various singles championships, having held the Hardcore, European, Cruiserweight, and United States Championship on one occasion each.