Jon Jones defended the UFC light heavyweight title twice in 2012. However, in some ways, the champion still had the most disappointing year of his MMA career.
In May, Jones wrecked his Bentley and was arrested for driving while intoxicated. While that was clearly Jones' most serious misstep of the year, he would continue to come under criticism for turning down fights on late notice following an injury to previously scheduled opponent Dan Henderson.
Additionally, the light heavyweight champion came dangerously close to losing his belt in a bout against Vitor Belfort. Though he fought through a tight armbar and ended up beating the Brazilian challenger, Jones finally looked beatable for one of the first times in his career.
Jones wasn't the only fighter to face problems in 2012, though. Let's take a look at the worst moments in all of MMA over the past year.