My first post here, and I'm gonna get my money's worth. Sorry for the length but the explanation is what it is.
I don't believe the 'football move' or 'move common to the game' idea should have come into play as it applies to this call. Here's how I see it. When a receiver is attempting to possess a loose ball, which is what a forward pass is, two decision trees exist for determining if it is a catch or not. The first question that needs to be asked is, "Is the receiver going to the ground?" If the answer to this question is no, then one applies the simple decision tree of a standard standing catch.
1) Does receiver have control of the ball?
2) Does receiver get two feet down in bounds or just one other body part eg knee, elbow etc with control of the ball?
3) Does he make a move common to the game?
If the answer to these questions is yes, yes, yes then you have a completed catch and the receiver in that moment becomes a ball carrier.
If the answer to the very first question is, “yes, the receiver is going to the ground while attempting to possess the loose ball” then a whole different decision tree comes into play.
1) Does the receiver get two feet down in bounds or one other body part with control of the ball?
2) Does the receiver maintain control of the ball all the way through his contact with the ground until his momentum stops?
a. Yes = receiver is ball carrier
b. No = Does the ball ever touch the ground without the receiver having control of the ball?
i. Yes = incomplete pass or live loose ball
ii. No = does the receiver regain control of the ball while maintaining an inbounds status eg he doesn't slide out of bounds and then regain control.
1. Yes = receiver is ball carrier
2. No = incomplete pass or live loose ball
Nowhere in the 2nd decision tree does ‘move common to the game’ come up as part of the criteria. I believe Steratore and Blandino misspoke on this topic when providing explanations. Dez was going to the ground making the catch and had to fulfill this criteria and this criteria only to make it a completed catch.
Just to show how this flow chart works let's apply it to the Dez catch. The answer to the first question is he is making the catch while going to the ground. The answer to question 1 in that tree is yes, he got 2 feet down in bounds with control. The answer to the second question is no, he did not maintain control all the way through his contact with the ground and its subsequent momentum. the answer to the next question is yes, the ball touched the ground without Dez having control of the ball therefore incomplete pass.
The biggest problem I have seen with the basic fan's ability to interpret this call and sequence of events is the combining of the two decision trees. They are cherry picking stuff from one and applying it to the other. The idea of move common to the game only applies to standing catches, not falling catches.
All this being said, I believe these 2 sets of criteria for possessing a loose ball to be unnecessary and leads to the ridiculous amount of confusion seen after a call like this. No doubt the league should go to one set of criteria for all attempts to possess a loose ball:
1) Obvious control of a live loose ball
2) 2 feet or one other body part down with control
3) In real time a “one thousand one” count after 1 and 2 are fulfilled.
4) If control lost before #3, go back to #1
Yes, I know. #3 is a bit ambiguous and could lead to debate on certain plays about was the ball held long enough before the dude got blown up catching a pass over the middle and what not, but it would have definitely made the Dez play much easier to call. The play under this set of criteria is most definitely a catch. He would have become a ball carrier before he hit the ground so he would have been down by contact when his arm hit. Easy. No debate.
There would be plays that would have new results if this is applied. There is the possibility for more fumbles on the going to the ground plays. If a receiver catches the ball and fulfills the above criteria but is stumbling to the ground in the process without being touched and lost control of the ball when hitting the ground, this is now a fumble instead of an incomplete pass. Not a big deal as I see it. Receivers would need to be cognizant of this fact and be prepared to cover up a possible fumble.
Whatever the league determines, for the good of the game and the sanity of the fanbase, this needs to be cleaned up. A simplifying down to one set of easy to understand criteria will do this.