Few if any stories in 2017 were as big and jaw-dropping as yet another Jon Jones failed PED test was.
The former king of 205 initially was stripped of his title for a hit and run incident in 2015. Jones would eventually return for an interim title fight with Ovince Saint Preux at UFC 197 in 2016. He would then look for a quick turnaround after winning and look to unify the titles against his biggest rival, Daniel Cormier at UFC 200. Then Jones was busted once more for clomiphene just days before the fight.