Watch Maria Sharapova go nuts on Novak Djokovic's tennis balls

When you're Russian, appearing in a “crazy” viral video is part of the deal. So it was only a matter of time before we saw Maria Sharapova thwack a tennis ball right into somebody’s balls. In this case, that "somebody" is world number one men’s tennis champ Novak Djokovic. Predictably, he writhes around in chronic agony as he sees any hope of continuing his proud lineage fade out of view. Less expected is her jeering reaction. To be fair to Maria, and her cruel indifference to human suffering, it is pretty funny. Some commentators haved suggested it may be a stunt to promote tennis gear outfit, Head.