Folks:
A couple of things about this list:
1. I don't think Mika should even be included on this list, precisely because his stroke is so unique and personal. Mika has what's called a "locomotive stroke," in that the whole arm is in motion, almost continuously, in a circular/elliptical motion just like the wheel pushrods on an old steam locomotive. His is not an issue of whether he drops the elbow, but rather what his whole arm is doing throughout the stroke. It's not like he starts out with what looks like a pendulum stroke and then later drops his elbow during delivery of the cue -- which, correct me if I'm wrong, is the main item under contention in this thread?
2. I don't think it'd be fair to scrutinize every single video of a pro playing, to find just one instance where he/she dropped his/her elbow, and then go "AHA!! So-and-so 'is' an elbow dropper!" I'm not saying that's what's going on with the "yes/no" answers next to each pro's name in the list, but I just want to warn folks not to make this mistake. I think anyone/everyone, at one point or another every so many racks, drops his/her elbow. Heck, even *I* drop my elbow on rare occasions, and not during the type of shot one would expect (e.g. power draw shots). Nope, I tend to do this on very SOFT shots, where I'm lagging the cue ball to its destination. I guess it stems from relaxing the arm to the point where I can "feel" the motion of the cue best, to properly judge just the minimal amount of power needed to lag the cue ball to its destination. The trick to this type of categorization, is what does his/her elbow do during the 99% of the time he/she is at the table? IMHO, of course.
Just my $0.02 that I picked up off the floor.
-Sean
Well, it's either pendulum/pinned elbow or "other" (i.e. dropping/raising). All of these pros shoot with a dynamic elbow/shoulder. Mika sending his arm through the shot is a drop, imo.