Justin Gaethje (left) and Dustin Poirier (center) are veteran fighters that still pose a competitive threat to Islam Makhachev's (right) title reign. [Images courtesy: @ufc, @dustinpoirier and @ ...

Dustin Poirier believes Islam Makhachev could lose his lightweight title with just "one mistake" if he faces Ilia Topuria, despite the size difference. Topuria, the undefeated featherweight ...