Djokovic did it again at the 2008 Australian Open!
Now it seems that Sharapova looked to be retaliating.
"We'd need a really long time, because all I'll need is a tennis ball," she said of the leisurely Djokovic serve. "I'm just going to stand here and bounce the ball for a really long time before I serve. We're going to be here all day long."
Sharapova then called the Djokovic act "kinda boring," adding: "He's got his own little thing going on. So let him do it, I'm sure you guys are going to get bored of it. But it's fun any time you can get some entertainers out there."
Djokovic, the tennis clown has also done other impersonations including Rafael Nadal, Andy Roddick and Roger Federer.
Oops, I shriek again!
Back to 'Shriek'apova, an Environment Protection Authority officer recently measures the raucous Russian with a decibel counter during her match against Lindsay Davenport, the quiet American.
The results proved what was painfully apparent to opponents and fans.
Her loudest shriek was 71.5dB -- louder than a vacuum cleaner (70dB) and approaching the level of a power drill (80dB).
And that was from a distance of 30m. The only thing louder than Sharapova are the clapping and cheering for Davenport.