How to substitute players in FIFA ’12

Hey, I have a problem in Virtual Pro mode. The player’s banged up pretty bad (not injury). The stamina is very low and I really need to take myself (him) off the field but I don’t know how to request for a sub.
Can someone help me?
Answer #1
Found this:
http://uk.answers.yahoo.com/question/index?qid=20111003164559AAVAlRt
Answer #2
damn… thanks DSR.