UNCASVILLE, Conn. — Quinton Jackson is a 35-year-old with 45 mixed martial bouts under his belt. He’s been a UFC light heavyweight champion. Before that, he competed in the Pride Fighting Championship as well as a handful of other promotions. In a career that extends back to the last century — 1999 pro debut, OK? — he’s been in with Jon Jones and Rashad Evans, with Wanderlei Silva and Lyoto Machida, with Dan Henderson and Chuck Liddell.
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