Bears/Lions Game

[Sal Giaco]

Guys,
I am a baseball umpire but I also enjoy watching officials work different different sports. There was a controversial call towards the end of the Bears/Lions game yesterday and I was wondering if any of you saw it or could comment on it. The play was an apparent catch in the endzone (along the side) which was ruled incomplete by the official. To the untrained eye, the replays seemed to show that the receiver did not juggle the ball but the referee explained the following after using the replay booth:

"After review, as the receiver was going to the ground on his own, the ball moved when he hit the ground. It is an incomplete pass as ruled on the field.

This explanation seemed to confuse many people, including myself. I was hoping you guys could clarify what constitues a catch and/or possession. Thanks