Sixers double and triple teaming KG is the reason they have tied the series.

[Celtics18]

The truth is that it wasn't so much that they were double and triple teaming KG in the post as that he never really got the ball in the post.  You've got to give Elton Brand a lot of credit for that.  He was really manhandling KG for the majority of that game, and Kevin never seemed to be able to establish himself.