tap out (2)

No not really,well not that I know of but surrounding your opponent in the cage then giving them a large amount of punches and kicks will do the trick to weaken them down and get them tired.

Trow him down and block the transitions and that help to tired him fast!!

I was using a LW Judo/Kickboxer on Expert and tried to submit every guy. I had 6 wins by KOs 6 wins by Subs and 4 Losses by Submission. My Sub Offense was at 35 yea 35. All of a sudden I started winning every match by 1st round submission many within the 1st min. I was even submitting my sparring partner 3 times every session. I won 10 matches straight like that. Like an idiot I saved my game and turned it off. When I came back to it. I could not get a sub to save my life. I don't knwo if it was a glitch or a gift.

Body shots. Body shots drain stamina because with each hit you are knocking the wind out of them. Also leg kicks will help greatly if you are going for a submission on the legs.

Takedown your opponent down get to mount full posture block all transitions but while blocking transitions throw one hammer fist thats all just one everytime you block the transiton.usually after 6 or 7 punches land it puts him into a dazed state activate a submission and 90 of the time it will be succesfull.you don't really have to tire your opponent to get a submission to work.please take this advise because I play on expert only and have only lost 6 out of atleast 200 fights and all of them by flash knockout.this is a very successfull tactic.