Stefan Koubek loses to Blake, reveals belly-button surprise

While watching Stefan Koubek take on James Blake last night at the US Open, we realized we had never noticed his amazing body. The Austrian is sporting some serious guns and you know how much we like that. Plus, when he pulled up his shirt he revealed a six-pack and a very sexy belly-button piercing. It makes us wonder what else Stefan may be hiding under his tennis gear...ouch.