We discussed this situation at a referees meeting many years ago. Technically, if there are two bookable offences then the referee is within his rights to issue two yellows but I maintained then, and I still do now, that it cannot be considered a 'caution' unless the player is aware that he has been 'cautioned'. One experienced referee said that he used to point at the offending player and say clearly 'you're booked' without actually showing the card at that time. I'm sure that this situation will be discussed and clarified at the next FIFA meeting but that won't help Baird.