I don't understand this because I may be old school . College & Olympic wrestlers that I have watched don't " tap out " . They may ask for time or spin their finger in a circle to indicate an injury time . I don't recall any of them doing this while on their back while being put in a pinning combination . We have rules that prevent dangerous situations or holds to induce such a reaction . We are not allowed to " choke out " anyone so why should a tap out even occur ? In MMA that is the only time you actually see a tap out . Most competent refs will not allow a hold that causes a choke or dangerous situation to a body joint ; if a wrestler taps out while on their back they are trying to avoid a pin . The hold would have been broken if it were illegal that caused the wrestler to be put to their back in the first place . Sorry for the rant but I hate to see a great sport get soft due to a misunderstanding of the difference between the two venues .