You aren't a runner if you are in the act of catching a pass. Its a player that goes to the ground.
So,
1. When do you think Dez went to the ground?
2. When do you think he completed the catch process, ie became a runner?
LOL, talk about misleading claims.
Not one person has claimed you are a runner when in the act of catching a pass, this just another leading question designed to attempt to twist the reply to fit your misinterpretation.
Okay out there here is what the rule really says and means.
Item 1 uses player because it covers both offense and defense, 8.1.3 is a rule for catches and INTs. So when someone says things like receiver to runner it is accurate when the player in the example is an offensive player.
Item 1, the going to the ground rule, is governed by rule 8.1.3.a.b.c which establishes the transition from a player in the process of catching the ball, again in the case of an offensive player a receiver, to a runner. Parts a) and b) control and two feet are the acts of a receiver or defender attempting to intercept the ball. Part c) the time to perform any act common to the game, also know as a football move, is what turns the player/receiver/defender into a runner.
So when Item ones says a player going to the ground in the process of a catch must maintain control through initial contact with the ground, it is talking about a player/receiver/defender, that has only performed none, one, or both of part a) and b) but does not perform part c) so they still land as a player/receiver/defender in the process of a catch. Note that nowhere in the rule does it say that 8.1.3.a.b.c ends when a player begins to fall. In 2014 there was no concept of upright long enough, nor did anything close to those words exist in the rules. So logic would say that a player could still become a runner during the Item 1 process as long as he did so before hitting the ground.
That logic is shown to be true by case plays A.R. 15.95 under acts common to the game which directly links it to rule 8.1.3.c which clearly stats
ANY ACT COMMON TO THE GAME.
This is further shown to be true in case plays A.R. 8.12 and 8.13 under going to the ground. The similarities of the 3 case plays leads some to infer that only the acts described ends Item 1. They do so without any rule book support, because remember A.R. 15.95 links directly to acts common to the game in 8.1.3.c and the supposed magic act is not even mentioned among several acts plus etc. Logic once again would say if this singular act was so special why wouldn't the rule say so? Those same some with the magic act will lead you to believe that the catch rules changed between 2013 and 2014, and this is completely false. The catch rule in 2013 and 2014 are identical, and the rule summary makes no mention of any clarification to the catch rule in 2014. There was no change, it is a complete fabrication. You want to know why? Because in 2013 there is a video where Dean Blandino explains a couple of catches where players are going to the ground and states that control, two feet down, and a reach ends Item 1. That reach is a different act then that magical act in the case play. Again logic raises its head and sees reach in Blandino's explanation and another act in the case plays and says look at 8.1.3.c where it says any act. This completely destroys their argument so the fabricated rule change enters to explain away Blandino's explanation.
So it comes down to logic versus a magical, secret act. Apparently Dean Blandino is actually Dean Wormer and instead of a double secret probation we have a magical secret act.