▁at ▁U FC ▁Fight ▁Night ▁ 1 3 4 . ▁He ▁lost ▁the ▁fight ▁via ▁un anim ous ▁decision . ▁ ▁St as iak ▁was ▁released ▁by ▁U FC ▁in ▁September ▁ 2 0 1 8 . ▁ ▁Post - U FC ▁career ▁After ▁one ▁victory ▁in ▁the ▁regional ▁circuit , ▁St as iak ▁signed ▁with ▁K SW ▁and ▁is ▁faced ▁Ant un ▁Ra č ić ▁for ▁the ▁inaug ural ▁K SW ▁B ant am weight ▁Championship ▁at ▁K SW ▁ 5 1 ▁on ▁November ▁ 9 , ▁ 2 0 1 9 . ▁St as iak ▁lost ▁the ▁gra pp ling - he avy ▁contest ▁via ▁un anim ous ▁decision . ▁ ▁Championships ▁and ▁accomplish ments ▁Ult imate ▁Fight ing ▁Championship ▁Fight ▁of ▁the ▁Night ▁( One ▁time ) ▁vs . ▁Brian ▁K elle her ▁ ▁M ixed ▁mart ial ▁arts ▁record ▁ ▁| - ▁| L oss ▁| align = center | 1 1 - 7 ▁| ▁Ant un ▁Ra č ić ▁| Dec ision ▁( Un anim ous ) ▁|| KS W ▁ 5 1 : ▁Cro atia ▁| ▁| align = center | 5 ▁| align = center | 5 : 0 0 ▁| Z ag reb , ▁Cro atia ▁| ▁| - ▁| Win ▁| align = center | 1 1 – 6 ▁| N ik ol ay ▁K ond rat uk ▁| Sub mission ▁( Arm - Tri angle ▁Ch oke ) ▁| R ock y ▁War riors ▁Cart el ▁ 2 : ▁Turn iej ▁W agi