What are the different kinds of receiver?

What are the different kinds of receiver?

Different kinds of receivers are, you've got a flanker, you've got a split end, and you've got a slot receiver, depending if you're in a three receiver set. The split end is always on the ball, because you have to seven people on the line of scrimmage. The slot receiver is always off, and your flanker is usually off. So, the reason why you have to have the split end on is because you have to have seven men on the line of scrimmage at all times. If you don't, you get a penalty. So that's the reason why you see some receivers on and some receivers off.