here is the rule from the NBA and the NCAA for basketball:
Check out a recent NBA rule book here:
NBA.com
There is only one mention of face (eye) guarding. At the bottom of page 41 it states that...
"Eye guarding (placing a hand in front of the opponent’s eyes when guarding from the rear) a player who does not have possession of the ball is illegal and an unsportsmanlike technical shall be assessed."
So, it's o.k. to do it when you are guarding someone's shot, but if you play peek-a-boo from behind on the person you are guarding, it's illegal (and also pretty freakin' weird).
In college and high school it IS illegal. Here's what's in the NCAA basketball rule book (
http://www.ncaa.org/library/rules/20...ball_rules.pdf ) on page 142 (Section 7; Article4):
Direct Technical Fouls for Unsportsmanlike Player Conduct
"Purposely obstructing an opponent’s vision by waving or placing hand(s) near his or her eyes."
it was a chicken**** move by Avery, totally unsportsmanlike, and you can tell how chicken**** it was because no one else had done it before the instigator rule was around. you do something stupid like that, you deserve to get your ass beat.