i wonder why ref must give a penalty if he not totally sure there's contact or not between the players...

if it's critical decision such as penalty, first ref must 100% sure there's contact, & from that he must decide whether that incident merit a penalty or not...

in ronaldo case, middlesboro keeper didnt touch him at all & i cant understand from where the ref got 100% sure there's contact.....if not sure, just dont give it.... it shows, ref always bias to big team...unlucky boro...