Pick N roll or Moving Screen

[Jurassic Referee]

Originally posted by TigerBball


I tell them if they are pivoting and using their backside to contact the defender, they are OK, but if they keep facing the defender and move both their feet to keep him pinned, it is going to be a foul.

Coach, pivoting and then using their backsides is illegal. The screener has to hold their position on the "pick" part of a "pick 'n' roll" until they feel the contact, then roll. Or "roll" without contact. If they pivot and roll before the contact, it's usually an illegal screen. Whether it gets called or not is another story.