With the World Series of Fighting shifting to the Professional Fighters League in 2018, current lightweight champion Justin Gaethje is expected to head to the UFC.
WSOF/PFL president Ray Sefo first mentioned it on Twitter Thursday, to which Gaethje also replied:
— Justin Gaethje ?? (@Justin_Gaethje) April 27, 2017
Gaethje is a perfect 17-0 in his career and regarded as one of the top fighters outside of the UFC.