kick 'im while he's down

[Jurassic Referee]

Originally Posted by Snaqwells

Perhaps the same advantage gained by the player who pushes an opponent during a successful field goal try. The rule says, essentially, "prevents the opponent from participating in normal defensive or offensive movements." I'd say getting kicked in the head qualifies as preventing a player from normal defensive movements.

I don't think it has to be inentional or nothing, common would work, too.

Disagree. You're talking apples and oranges. If you call a foul during a try, you don't know if the ball is going in or not. You're calling illegal contact which might affect the play. If you saw a player kick another player lying on the floor during a try, would you call that a common foul?

What advantage is a player getting if he kicks a player well away from the play? None that I know of. And what's he preventing that player from doing? No matter whether the player was kicked or not, he still has to get up and get back in the play. I can't see where a kick prevents anything unless it incapacitates the player.

The act does fit both the criteria of an intentional foul or maybe even a flagrant foul depending on severity of contact, as decided by the calling official's judgment. Imo the calling official has 3 choices:
1) No foul- incidental contact.
2) Intentional foul- contact away from the ball or when not playing the ball. Note that this definition also says that it doesn't have to be premediated and isn't based on the severity of the act.
3) Flagrant foul- violent contact.

As I said, straight judgment call but from the description given in the OP, I'd say that the most appropriate calls would be either a no-call or an intentional foul.