stroke
Cool picture.
I noticed in both this picture and in watching Ralph Greenleaf, they both have a very different form. Not only do they not get down as low on the ball which is well known, their back arm is way different. Their elbows seem to be much lower and they are choked way up on the cue. When watching Greenleaf it seemed like he was lifting the cue stick and tossing it underhanded.
I'm just noticing this now, if anyone knows more about this I'm interested. It's amazing to me that worked so well.