8, 2015, at UFC Fight Night 73. Dariush won the fight via controversial split decision. Every mainstream MMA media outlet scored the fight as a decision victory for Johnson. Dariush was expected to face Mairbek Taisumov on January 17, 2016, at UFC Fight Night 81. However, Dariush pulled out of the fight in early December citing injury and was replaced by Chris Wade. Dariush faced Michael Chiesa on April 16, 2016, at UFC on Fox 19. Dariush lost the fight via submission in the second round. Dariush next faced James Vick on June 4, 2016, at UFC 199, replacing an injured Evan Dunham. Dariush won the fight via KO in the first round. Dariush faced Rashid Magomedov on November 5, 2016, at The Ultimate Fighter Latin America 3 Finale. He won the fight via unanimous decision. Dariush faced Edson Barboza on March 11, 2017, at UFC Fight Night 106. He lost the fight via KO due to a flying knee in the second round. Dariush fought Evan Dunham on October 7, 2017, at UFC 216. The fight ended in a majority draw, with one judge scoring the bout for Dariush. Dariush was expected to face Bobby Green on March 3, 2018, at UFC 222. However, on February 14, 2018, it was announced that Green was forced to pull out from the event, citing injury. Green was replaced by Alexander Hernandez. Dariush lost the fight via knockout in the first round. Dariush was expected to face Chris Gruetzemacher on November 10, 2018, at UFC Fight Night 139. However, on October 18, 2018, it was reported that Gruetzemacher withdrew from the event and he was replaced by newcomer Thiago Moisés. He won the fight via unanimous decision. Dariush faced Drew Dober on March 9, 2019, at UFC Fight Night 146. He won the fight via submission in the second round. This win earned him the Performance of the Night award. Dariush was expected to face Drakkar Klose on July 13, 2019, at UFC Fight Night 155. However, on July 7, Dariush pulled out of the fight with an injury. As a result, UFC officials opted to remove Klose from the card and he is expected to be scheduled for a future event instead. Dariush faced Frank Camacho on October 26, 2019, at UFC on ESPN+ 20. He won the fight via submission in round one. This win earned him the Performance of