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-   -   Screening vs Guarding (https://forum.officiating.com/basketball/13830-screening-vs-guarding.html)

blindzebra Sat May 29, 2004 04:31pm

Quote:

Originally posted by Hawks Coach
I think the problem with the dribbler is that when the contact comes from behind, the contact is generally considered to be the fault of the defense.
Unless the dribbler extends their butt outside their cone of dribblcality! :D

BktBallRef Sat May 29, 2004 04:41pm

Quote:

Originally posted by Camron Rust
I'm going to stir the pot a little....

Guarding is only performed by the defense (by definition).

Screening can be performed by either team...although it's almost exclusively performed by the offense.

Example of defensive screening:

B1 on A1. A1 dribbles the ball off his foot. Both turn toward the ball which has bounced behind B1. B5 is going for the ball. B1 see this and, rather than going for the ball, screens A1 to give B5 enough time to get the ball. B1 has his back to A1.

That sounds a lot more like a screen than guarding to me and B1 is on defense...until B5 picks up the ball.

I can appreciate the explanation. However, I would submit that while team control exists, neither team is really on offense or defense. This is why the NBA would refer to this as a loose ball sitaiton. If A committed a foul after B deflects the ball, it would be a loose ball foul, not an offensive foul.

Jurassic Referee Sat May 29, 2004 06:39pm

Quote:

Originally posted by blindzebra
Quote:

Originally posted by Hawks Coach
I think the problem with the dribbler is that when the contact comes from behind, the contact is generally considered to be the fault of the defense.
Unless the dribbler extends their butt outside their cone of dribblcality! :D

LOL!

ChuckElias Sun May 30, 2004 08:58am

Quote:

Originally posted by blindzebra
Unless the dribbler extends their butt outside their cone of dribblcality! :D
I haven't paid very close attention to this thread, but that's just too freakin' good to ignore! :D

Mark T. DeNucci, Sr. Sun May 30, 2004 08:49pm

All right gang.

I am not going to retype the definitions of guarding and screening because I am just too tired from officiating six games today and I still have yet to shower and get packed for the drive home tomorrow.

The definition of guarding defines it as something that is done by a "defensive player." The definition of screening defines it as something that is done be a "player," including a player with the ball.

The key points that many people are missing is that for a defenisive player to initially obtain/establish a legal guarding position, the defensive player must be facing the offensive player. Does a player need to be facing an opponent to set a screen? No. Therefore a defensive player can set a screen against an offensive player just as well as a offensive player can set a screen against a defensive player.

If one goes back to the example that I gave in my very first (at least I think it was my first) post in this thread, B4 set a screen against A1. Why was it a screen? When B4 took his position in front of A1, B4 was not facing A1. Because he was not facing A1, B4 was effecting a screen and was not attempting to obtain/establish a legal guarding position. The result is the same. B4 did not give time and distance to A1 when setting his screen and therefore B4 was guilty of a blocking foul.

As I have stated before, the result of guarding and screening is blocking and charging.

Someone asked the question about legal screen and illegal guarding. When a defensive player is setting a screen he is not attempting to obtain/establish a legal guarding position. The thing to remember is that the defintions of guarding and screening help us to determine whether a player has a legal right to a spot on the floor.

If B1 runs to a spot on the floor that is fifteen feet from any other player on the court. It can be said that while he may not be attempting to obtain/establish a legal guarding position against an opponent, he at the very least has set a legal screen against any player whose straight line path from Point A to Point B goes through the spot where B4 is standing, whether B4 is facing his opponent or not. Of course if B4 is facing A1 then we can say that he has obtained/established a legal guarding position against A1 and if he is not facing A1 then he is setting a screen against A1.

MTD, Sr.

[Edited by Mark T. DeNucci, Sr. on May 30th, 2004 at 09:57 PM]

Adam Sun May 30, 2004 09:47pm

Mark,
Quick follow up question:

Aren't time and distance required when establishing legal guarding position against a player without the ball?

If B4 is standing still for an hour, not facing A2, and A2 runs into B4; foul on A2. I'm not calling a foul on a player who hasn't moved. Perhaps this is an instance where I'd have to invoke the screening rules?

I'm not sure.

rainmaker Mon May 31, 2004 12:02am

The questionable play would be when a defender sets what would be a legal screen if offense set it, but does not establish legal guarding position. I can see that it wouldn't happen very often, but it does appear by the wording of the rules to be possible. The question is, what's the ruling?

So B4 leaves time and distance and stands stock still, but isn't facing the opponent. Legal screen if offense does this, but there's no legal guarding position, because B4 is facing sideways. If there's contact, who's the foul on?

blindzebra Mon May 31, 2004 12:26am

Quote:

Originally posted by rainmaker
The questionable play would be when a defender sets what would be a legal screen if offense set it, but does not establish legal guarding position. I can see that it wouldn't happen very often, but it does appear by the wording of the rules to be possible. The question is, what's the ruling?

So B4 leaves time and distance and stands stock still, but isn't facing the opponent. Legal screen if offense does this, but there's no legal guarding position, because B4 is facing sideways. If there's contact, who's the foul on?

If B4 got there first legally they are entitled to that spot on the floor. If you use that and the regular guarding rules there is no problem.

The rule book is full of these little semantic loopholes, and the harder you make them, the harder it gets to apply the rules.

Take JR's advice and keep it simple.

Camron Rust Mon May 31, 2004 11:35pm

Quote:

Originally posted by Jurassic Referee
Quote:

Originally posted by Hawks Coach
Two scenarios involving "screening," one offense, one defense.
....
2. B is in a 2-3 zone. Ball is on the left wing. A1 is just outside the left block. B1 is fronting A1, B2 has slid over behind A1, but is playing in a help position (A3 is in the right block), so continues to face the top of the key rather than toward A1. Order of players is B1, A1, B2, with B2 not facing A1 and therefore "screening" her. A2 on wing attempts an ill-advised lob to A1. As A1 extends a hand and begins to step toward hoop to catch ball, she collides with B2, again not getting a full step. Is B2 guarding, standing, or setting a blind screen. How do you decide?

1) Correct, it's an illegal screen as per Rule 4-39-4 and 10-6-3(a).

2) B2 is guarding in this play, imo. She meets the definition of "guarding" in R4-23-1- <i>"Guarding is the act of LEGALLY placing the body in the path of an offensive opponent"</i>. B2, in other words, is ILLEGALLY guarding A1 because she didn't give A1 a step. Casebook play 10.6.2SitB says that screening principles do apply to offensive players also- <i>"Screening principles apply to the dribbler who attempts to cut off an opponent who is approaching in a different path from the rear."</i>. Note that it says "principles", but doesn't actually label the dribbler's action a "screen", by definition. Weird semantics, but appropriate, I think. Anyhoo....iow, when you apply these screening principles to A1, B2 is now illegally guarding A1 by (1)not giving A1 a full step when B1 set up behind A1 and outside her vision, and(2)never obtaining an initial legal guarding position(she's turned t'other way). Now, if B2 was more than a step away, then A1 would be responsible for the contact. In that case, B2 wasn't facing A1- so she isn't guarding or screening. However, she does have a right to her legal position on the court, so A1 is responsible for any contact that occurs.



If what you say were true, you could never guard someone who is posting up. They have their back to you. They move one way and you move to adjust but you'd have to give them a step if they never turned their head. I don't think so. Guarding a stationary opponent requires no time or distance....blind or not.

Jurassic Referee Tue Jun 01, 2004 04:51am

Quote:

Originally posted by Camron Rust
Quote:

Originally posted by Jurassic Referee
Quote:

Originally posted by Hawks Coach
Two scenarios involving "screening," one offense, one defense.
....
2. B is in a 2-3 zone. Ball is on the left wing. A1 is just outside the left block. B1 is fronting A1, B2 has slid over behind A1, but is playing in a help position (A3 is in the right block), so continues to face the top of the key rather than toward A1. Order of players is B1, A1, B2, with B2 not facing A1 and therefore "screening" her. A2 on wing attempts an ill-advised lob to A1. As A1 extends a hand and begins to step toward hoop to catch ball, she collides with B2, again not getting a full step. Is B2 guarding, standing, or setting a blind screen. How do you decide?

1) Correct, it's an illegal screen as per Rule 4-39-4 and 10-6-3(a).

2) B2 is guarding in this play, imo. She meets the definition of "guarding" in R4-23-1- <i>"Guarding is the act of LEGALLY placing the body in the path of an offensive opponent"</i>. B2, in other words, is ILLEGALLY guarding A1 because she didn't give A1 a step. Casebook play 10.6.2SitB says that screening principles do apply to offensive players also- <i>"Screening principles apply to the dribbler who attempts to cut off an opponent who is approaching in a different path from the rear."</i>. Note that it says "principles", but doesn't actually label the dribbler's action a "screen", by definition. Weird semantics, but appropriate, I think. Anyhoo....iow, when you apply these screening principles to A1, B2 is now illegally guarding A1 by (1)not giving A1 a full step when B1 set up behind A1 and outside her vision, and(2)never obtaining an initial legal guarding position(she's turned t'other way). Now, if B2 was more than a step away, then A1 would be responsible for the contact. In that case, B2 wasn't facing A1- so she isn't guarding or screening. However, she does have a right to her legal position on the court, so A1 is responsible for any contact that occurs.



If what you say were true, you could never guard someone who is posting up. They have their back to you. They move one way and you move to adjust but you'd have to give them a step if they never turned their head. I don't think so. Guarding a stationary opponent requires no time or distance....blind or not.

Man, this thread is getting confusing.

Camron, in Juulie's play above, A1 did NOT have the ball- i.e. lob being thrown into her. The point that I was trying to make, and I'm not even sure anymore whether it really is applicable to Juulie's exact case above, is that a "help" defender switching over to a pivot player on a lob MUST give time and distance-similar to a screen. Once A1 has the ball however, time and distance no longer apply(as long as A1 wasn't in the air when she received the lob naturally). Casebook plays 10.6.3SitC&D. If the defensive player wasn't switching over, but was just standing there, then they are entitled to their spot on the floor.

[Edited by Jurassic Referee on Jun 1st, 2004 at 05:53 AM]

Hawks Coach Tue Jun 01, 2004 05:33am

Quote:

Originally posted by Jurassic Referee
Man, this thread is getting confusing.
Yes it is - and stop calling me Juulie :D

Jurassic Referee Tue Jun 01, 2004 06:42am

Quote:

Originally posted by Hawks Coach
Quote:

Originally posted by Jurassic Referee
Man, this thread is getting confusing.
Yes it is - and stop calling me Juulie :D

Surely I'll do that(there's your set-up line). :D

Now you know how confused this sucker has got me.

All I really know is that if the foul is on the defense, it's gonna be a block or a hold. If it's on the offense, it's gonna be a charge or a push. T'hell with who happened to be guarding or screening at the time.

Camron Rust Tue Jun 01, 2004 10:23am

Quote:

Originally posted by Jurassic Referee

All I really know is that if the foul is on the defense, it's gonna be a block or a hold. If it's on the offense, it's gonna be a charge or a push. T'hell with who happened to be guarding or screening at the time.

I call most illegal screens that are worthy of a foul as a <em>block</em>. They usually involve putting their body into the path of the defender without leaving time or distance or are moving at the time of contact. If they are using their hands to aid in the screen, a hold would be my call. If they not only get into their path but knock them way off their line, a push is my call.

I use the same creteria for screening or guarding.

blindzebra Tue Jun 01, 2004 02:55pm

Quote:

Originally posted by Camron Rust
Quote:

Originally posted by Jurassic Referee

All I really know is that if the foul is on the defense, it's gonna be a block or a hold. If it's on the offense, it's gonna be a charge or a push. T'hell with who happened to be guarding or screening at the time.

I call most illegal screens that are worthy of a foul as a <em>block</em>. They usually involve putting their body into the path of the defender without leaving time or distance or are moving at the time of contact. If they are using their hands to aid in the screen, a hold would be my call. If they not only get into their path but knock them way off their line, a push is my call.

I use the same creteria for screening or guarding.

It does not matter what kind of foul you call on an illegal screen. What is important is saying loud and clear, "ILLEGAL SCREEN," then go report whatever you want.

I've seen plenty of officials close, on a group of players, with an emphatic block signal and nobody knew what they had UNTIL they reported the foul.

[Edited by blindzebra on Jun 1st, 2004 at 03:58 PM]

Camron Rust Tue Jun 01, 2004 04:12pm

Quote:

Originally posted by blindzebra
Quote:

Originally posted by Camron Rust
Quote:

Originally posted by Jurassic Referee

All I really know is that if the foul is on the defense, it's gonna be a block or a hold. If it's on the offense, it's gonna be a charge or a push. T'hell with who happened to be guarding or screening at the time.

I call most illegal screens that are worthy of a foul as a <em>block</em>. They usually involve putting their body into the path of the defender without leaving time or distance or are moving at the time of contact. If they are using their hands to aid in the screen, a hold would be my call. If they not only get into their path but knock them way off their line, a push is my call.

I use the same creteria for screening or guarding.

It does not matter what kind of foul you call on an illegal screen. What is important is saying loud and clear, "ILLEGAL SCREEN," then go report whatever you want.

I've seen plenty of officials close, on a group of players, with an emphatic block signal and nobody knew what they had UNTIL they reported the foul.

I disagree. The first call should be the real call with explanations afterwards.

I whistle, indicate (by signal and voice) block, immediately indicate a direction and color to communicate that the foul was on the offense and that we're heading to the other end. I do exactly the same thing for other common offensive but non-screening fouls. It resembles a common PC foul mechanic wherein officials punch the direction as part of the call.

Everyone gets the picture without confusing the call by calling it an illegal screen. Calling it such often results in coaches and/or fans calling for an "illegal screen" to be called when a screener moves but creates no contact.

They know what a block or a hold is and it doesn't confuse anyone if you clearly indicate the color and direction along with it.

[Edited by Camron Rust on Jun 1st, 2004 at 05:16 PM]


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