loose ball, and screen?

[texaspaul]

When I saw loose ball and screen, I thought it would be the out-of-bounds play. Example: Team A in their front court, has a loose ball headed out of play. B1 sees that the ball will be out on A, steps in front of A1 to prevent him from getting to the loose ball, as it bounds out. I've never called an illegal screen on this play, but I've had a few that probably could have warranted one.

[Kelvin green]

Cylinder of Verticallity?

Explain....

Screening cannot extend outside shoulders. So if a screener has his arms up so that arm extends from a 90 degree angle from body and then up.. Arms are not where they are supposed to be and it will be a foul. (Part of the arm is extended out of verticality....