▁Erik ▁Pere z ▁on ▁November ▁ 2 1 , ▁ 2 0 1 5 ▁at ▁The ▁Ult imate ▁F ighter ▁Latin ▁America ▁ 2 ▁Finale . ▁However , ▁St as iak ▁was ▁removed ▁from ▁the ▁bout ▁for ▁und is closed ▁reasons ▁in ▁mid - Oct ober ▁and ▁was ▁replaced ▁by ▁Taylor ▁Lap ilus . ▁ ▁St as iak ▁next ▁faced ▁Filip ▁Pe ji ć ▁on ▁April ▁ 1 0 , ▁ 2 0 1 6 ▁at ▁U FC ▁Fight ▁Night ▁ 8 6 . ▁He ▁won ▁the ▁fight ▁via ▁submission ▁in ▁the ▁first ▁round . ▁ ▁St as iak ▁faced ▁Dave y ▁Grant ▁on ▁October ▁ 8 , ▁ 2 0 1 6 ▁at ▁U FC ▁ 2 0 4 . ▁He ▁won ▁the ▁fight ▁via ▁submission ▁in ▁the ▁third ▁round . ▁ ▁St as iak ▁faced ▁Pedro ▁Mun hoz ▁on ▁May ▁ 2 8 , ▁ 2 0 1 7 ▁at ▁U FC ▁Fight ▁Night ▁ 1 0 9 . ▁He ▁lost ▁the ▁fight ▁by ▁un anim ous ▁decision . ▁ ▁St as iak ▁faced ▁Brian ▁K elle her ▁on ▁October ▁ 2 1 , ▁ 2 0 1 7 ▁at ▁U FC ▁Fight ▁Night ▁ 1 1 8 . ▁He ▁lost ▁the ▁fight ▁via ▁technical ▁knock out ▁in ▁the ▁third ▁round . ▁This ▁fight ▁earned ▁him ▁the ▁Fight ▁of ▁the ▁Night ▁award . ▁ ▁St as iak ▁met ▁prom ot ional ▁new com er ▁Li u ▁P ing y uan ▁on ▁July ▁ 2 2 , ▁ 2 0 1 8