Are you SURE he played as a junior?
We all know, rocking left and right like that, swinging the racket, is NOT good for vision and concentration for returning any kind of serve.
He holds a clumsy continental grip, arm stiff and too extended.
He's only blocking the backhand.
On the second return, he's trying to swing out at a body shot forehand side using the same conti grip.
Did he play junior tennis in 1969?