Buck, Arch, and back door is beginner BJJ stuff.
So are the hooks on either arm to prevent that.
I just spent about 20 minutes reversing and replaying that fight and have come to some conclusions:
Double under-hooks kept Gracie from getting the recovery to guard. Gracie tried to back door but Hughes prevented the escape with under-arm hooks and then pinned him flat again with back cranks. Each time Gracie tried to arch or back door again he was hooked and pounded on. Hughes rained down head shots both over and under Gracie's arms or dropped elbows like wreaking balls. Gracie was left with trying to protect his head with the his arms out in front of him and Big John was left with nothing but a stopage. Gracie had little chance if any to get out of this after 20 or 30 seconds because he was dazed out. After the stopage he was wobbled while still on his knees. He recovered well after 60 seconds.
I'm not trying to argue with anyone here ... it's just that Gracie was plain and simply beat by Hughes. If he was gonna throw this then why get in the game in the first place? He has way to much pride in himself and toooooo much respect for the legacy he and his family have created to throw a fight for a second rate organization like the UFC. There is just no real gain financially for Royce Gracie considering how successful he has been setting up BJJ training facilities across the country. FFS his dad was right there in the seats watching this. No way in hell he would throw a fight with his father there watching. His brothers would have had to be in on the fix too ... and that is just not possible. Bottom line, under-training, over confidence, and a loss of the level of reflexes and speed needed to compete at that level all combined to beat Gracie.
I like ya BD and believe you really do train ... unlike some of these others around here who only wish they did ... so don't take this personally.