There were Pierce vs Safina highlights on youtube where Mary just spanks a return off Dinara's second serve which would have to be up there.
That's the first shot I thought of when I saw this thread.
Seriously, when I watched those highlights for the first time, I had to rewind that point about 5 times to make sure I was seeing things correctly.
Bitttchhhhhhhhhhhhhhhhhhhhhhhhhhhh You Better Pay It Honey! The Devil Is A Liar!!!!! Bitches Get Interviews And Shit? Where They Do That At Honey? Girls Are Late Honey!!!! The Queen Needs To Get Into It Honey Cause The Girls Is Late Out Here! Yes Honey Im Throwing Epic Shade!