Guys with more to lose than just teeth. Lyoto Machida: The 15-0 record is a pressure cooker -- without the “unbeatable” tag, would Lyoto Machida’s eccentric style be as captivating? Joe Stevenson: A strong UFC start was sidetracked by the B.J. Penn loss: Joe Stevenson is 2-2 since that bout. To flirt with the top of the ladder again,...