SS - no offense but posting these and people telling you yes or no are doing no good long term, you need to do your homework. You need to find out the % the numbers land and then how and where the math comes in. It's not complicated at all. If you just ask is that a smart middle you will never learn anything. If you are going to ask a question I'd ask how do you figure out whether plays are positive expectation middles or not? And might want to try and ask it in the tech forum. Some sharp guys who know the answers to all this and more still look in down there, try it there. Also recommend reading back in those threads in that section, good information in there for beginners.
Last tip I learned from these forums is post something incorrect if you want to know the real answer. LOL. I have a nephew who knows ZERO about sports, he would ask a question and no one would answer. However if he posted something incorrect they will line up at the door to correct you. The irony is a lot of people won't share with you willingly but plenty will line up to bust your balls if you're wrong. Merry Christmas.