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If this question is what I think it is, the quarterback kicks his knee to signal a receiver or another backfield player that he wants them to start in motion, before the ball is snapped.
An illegal motion penalty may be several things such as two players in motion at the time of the snap, a player in motion that stops but is not set for at least one second prior to the snap, or a player that is moving forward towards the line of scrimmage at the time of the snap. In the NFL, one player is allowed to be in motion at the time the ball is snapped to the quarterback. This player in motion must be at least one yard behind the line of scrimmage and rung parallel to or away from the line of scrimmage at the time the ball is snapped. Two players in motion at the snap are illegally SHIFTING only, not motion. (REMEMBER!! DON'T GO SCREAMING TO THE RFF!!) Players moving before the snap are considered 'shifting'. The shift doesn't end until all 11 offensive players set for 1 second (2 in HS). After the 'set' if only one player begins moving (not in a quick manner such as simulating the snap, which is a false start) and the ball is snapped, he is in motion. The rules of motion is that the player can only move side to side behind the line of scrimmage, and a back inside the tackle box can move forward while inside the tackle box, but cannot be moving forward at the snap. Therefore, an illegal motion is usually when a motion player is moving forward towards the line of scrimmage
It is usually to signal a man in motion or to snap the ball.
If a running back, wide receiver, or a tight end are originally set in one spot and begins to run to the opposite side of the formation, even though they may not go all the way to the opposite side. In American 11-msn football, only one player may be in motion at a time when the ball is snapped, and he must be running parallel to the line of scrimmage or away from it. Two players may be in motion at the same time, but they both must come set before the snap or another player goes in motion. In Canadian 12-man or Indoor 8-man football, two players can be in motion at the time of the snap, and they can go in any direction they like as long as they are behind the line of scrimmage at the time of the snap.
Technically, it is legal, though it would be pretty awkward to attempt such an act. By rule, a snap must be "a quick and continuous backward motion of the ball during which the ball immediately leaves the hand(s) of the snapper and touches a back or the ground before it touches a lineman." So the snap does NOT necessarily have to go between the snapper's legs. But going over the shoulder with "a quick and continuous backward motion" isn't really feasible unless the center is lying on the ground.
I didn't see this particular call, but here a few possibilities. The player cannot move toward the line of scrimmage at the time of the snap. Also, if more than one player goes in motion, one must be completely "set" in their new position at the time of the snap. In that particular play, Thrash was the only man in motion, but did not get set before the play was snapped. Meaning, once a player is in motion and they turn towards the line they have to stop and get set for 1 full second before the ball is snapped. In this play Thrash was in motion, turned and stopped, but just as the ball was snapped and that is illegal.
Yes. Encroachment is when a defensive player makes contact with an offensive player before the snap of the ball.
Yes. As long as there is one second left when the ball is snapped, the play counts.
yes you can as long as you have one man that is off the line from the same side that he motioned from step up on the line
According to chicagosports.chicagotribune.com, former NFL Head of Officials Jerry Markbreit answered a similar question with: "To become an eligible pass receiver and have the ability to go legally in motion, a T-formation quarterback must assume the position of a backfield player as in a Shotgun, Single Wing, or Double Wing Formation and be at least one yard behind the line of scrimmage at the snap. If the quarterback goes in motion from the T, he will be penalized for illegal motion and he will also not be eligible to catch a forward pass." In other words, if the quarterback takes the snap standing directly behind the center, he is not eligible to receive a pass. If the quarterback takes the snap in the shotgun formation or is at least one yard behind the line of scrimmage when the ball is snapped, he is eligible to be a pass receiver.
When a quarterback throws to an receiver or anyone on offense eligible on then the yards thrown from where the ball was placed and the offense player catches and extends the play until he Is tackled out of bounds or scores
The offensive lineman are pointing at who they think are blitzing or who there are going to block after the ball is snapped