It is one thing to win a world championship and quite another to hang on to one. As the old saying goes, in order to become a true champion, a fighter must not only capture a title but successfully defend it. Many mixed martial artists have done so over the years, but only a select few have stayed on top for extended periods of time.
The latest installment in the Sherdog Top 10 series examines the longest uninterrupted title reigns -- in days -- within the major organizations: the Ultimate Fighting Championship, Pride Fighting Championships, Strikeforce, Bellator MMA, the World Series of Fighting and World Extreme Cagefighting.