Dan Henderson's one career regret? Not fighting Jon Jones

TORRANCE, Calif. -- When you've accomplished everything Dan Henderson has in his combat sports career, it's tough to have many regrets.
The 46-year-old Southern Californian has traveled the globe earning accolades, from an amateur wrestling career that took him to the Olympics, to a UFC 17 tournament victory, to holding the 183- and 205-pound championships in Japan's PRIDE promotion, making him to date the only fighter to hold simultaneous major world titles.
But as Henderson prepares for one im