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.