My ass is too big. RT “@heldermario: @serenawilliams are you thinking of running in next years New York Marathon???#serenafriday

— Serena Williams (@serenawilliams) November 7, 2014

As a superfan of Ms. Williams and someone who thinks that anyone could attempt to run a marathon regardless of the size of his/her ass, I love Serena's response to this question.

Caroline Wozniacki surprised us with her NYC Marathon finish time of 3:26:33 earlier this week, but that doesn't mean marathons will become the cross-training strategy for today's elite tennis players. Serena just nipped that in

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