By the time you get to rank of grandmaster in thugjitsu, as Yves Edwards has, you've only got so much time left.
Inventing a fictitious (and vicious) style has taken the lightweight years to perfect, and the work is not yet over. He turns 35 this year and still has plenty of fight left in him.
But he's aware that his current UFC run could be his last, so every step he takes has to be in the right direction. It only takes a sparring session with the young bucks to figure out that a misstep could be the end of his dream.