Sonnen joined the guys on the "TMZ Sports" TV show on FS1 and explained that he wants the best for Rousey ... but pretending she has a real shot as an actress is a joke.
"This girl can't act, nor should she be able to. She's not a trained actor. She was in those opportunities because she was very famous."
Sonnen says for Ronda, fighting and acting opportunities are tied together -- "It's a house of cards. If one goes, they all go."