Alistair Overeem has tested positive to a banned substance following his Glory Collision 4 win over Badr Hari on October 8 in the Netherlands. Overeem defeated Hari by unanimous decision at the GelreDome in Arnhem, Netherlands but tested positive in an “A” sample collected the night of the fight. It was Overeem’s first fight since being released by the UFC in March 2021. The “Be” sample is being tested to confirm the findings. In a report by Dutch news outlet   De Telegraaf , Overeem’s team stated that “the substance found is not a performance-enhancing substance.” View this post on Instagram A post shared by Alistair Overeem (@alistairovereem) The win over Hari put Overeem in line to face Glory Heavyweight champion Rico Verhoeven.