Blake and Hewitt:

Blake had been know as a a saint in man's tour for years. Hewitt is a well know asshole.

2002 USOpen, I think it's the 4rd round. Blake was so annoyed by Hewitt's numerous c'mons and the unique strange hand gesture on opponent's mistakes, mocked Hewitt using Hewitt's very own hand gesture.

It's proven a costly mistake. Hewitt was infuriated. After that it's all Hewitt. Blake lost in 5.