"Smashing Ground" states "Distroy 1 monster with the highest DEF on your opponent's side of the field." It does not state if that card is face-up or face-down like other cards of this type. If it affects face-down cards and you have more than 1 card on the field, do you have to show your opponent the face-down card to verify that the card destroyed had the highest DEF? We may have an errata problem here. Does anyone know for sure what the correct ruling would be on this card?