http://sports.espn.go.com/espn/page2...x?name=simmons

when an accountant from Ernst & Whinney throws the seven envelopes into the glass drum, he bangs the fourth one against the side of the drum to create a creased corner...

If you look closely right at the 5:31 mark, right as the commish yanks that Knicks envelope out, there's a noticeable crease in the corner of the envelope. You can see it for a split-second -- as he pulls the envelope up, it's on the corner that's pointing toward the bottom of the jar.
http://www.youtube.com/watch?v=0TgJE7C5wiU