[NCAAREF]

The past few years there has been an emphasis placed on reffing the defense. The majority of officials, myself included have always tended to give the offensive player the benefit of the doubt on a close block/charge call. By referring the defense what they are saying is shift your focus off of the offensive player and look at the defense. Quite often you will suddenly find that they did get their feet planted in a legal guarding position. If you expand this same philosophy to the low post game, again you will start seeing off ball offensive pushes and holds that you were previously either not seeing, ignoring or calling a foul on the defense for.
Funny that this post was asked. I just worked a ball game with a veteran ref last Friday and his comment to me during our pre-game was" Wow, I've started to ref the defense like you guys are saying and I can't believe how much easier it is". Give it a try and you'll be pleasantly surprised.