2d and 10 at the A-40. A is in its standard spread formation. WR on left (A's sideline) runs a deep post pattern and pass to him is incomplete at about the B-30. As he jogs back upfield in the center of the field the rest of his team also gets back to the NZ to line up. They are a no-huddle team. He eventually veers to the outside and gets out wide again, so wide that he is closer to the sideline than he is the numbers. No subs come into the field of play. No defender moves out to cover him. QB has the ball snapped and throws the ball to that WR. Legal or illegal?