Bob Jewett said:
See Rule 6.16(b) and/or 6.16(c). It violates the fundamental rule of cue sports which is that you may only change the positions of the balls in play by striking the cue ball on a shot. Moving balls by accident is normally only a foul, but moving them intentionally by a technique that is not a shot destroys the game. (Insert favorite Cornbread Red story here.)
I'm not defending the "shot" and have posted to that effect but I also suggest that the shot CAN POSSIBLY be made legally if forward motion is applied along with the upward motion....IF the cue is LIFTED and not merely pivoted over a fulcrum bridge...in which case the tip will move backward in relation to the vertical plane at which the tip starts its motion.
That same principal applies to a full masse stroke. If the cue is oriented exactly vertically and is stroked STRAIGHT DOWN, the CB will certainly move but the shot would be illegal by rule, given that there would be no forward movement.
In fact, the cue could be oriented FORWARD of the vertical, in which case the cue would move BACKWARD relative to the departure path of the CB which, obviously would be illegal.
But if the cue is oriented BACKWARD of vertical, then there would be the required forward motion of the cue and such a masse shot would be legal and HAS been legal in the modern history of the game.
The same principal, it seems to me, applies to the shot in question i.e. IF...I repeat IF...SOME visible forward progress of the tip relative to the vertical plane at which the shot is initiated is observed, then the shot would not violate any rule of which I am aware.
Correct?
Regards,
Jim
NOTE: I'm just interested in the fine points of the rules here...and I repeat that the shot would be deemed illegal almost every time due to the difficulty in OBSERVING any forward motion.