It has been intimated that the corner pocket shelf's radii were enlarged to facilitate ball drops. See it with the odd scratch shot to end his 434 run on May 8, 2019. It is available on you tube. you could have put three balls into the opening. Pause the video and watch it frame by frame.
I kid you not
Has a third party verified playing surface, the pocket openings at 5" and shelf size depth. Is the table still there to confirm any of this? Just wondering.