via rear naked choke submission in the third round, resulting in his first submission loss in his professional MMA career. Both participants were awarded Fight of the Night for their performance. Arlovski faced Francis Ngannou on 28 January 2017 at UFC on Fox 23. He lost the fight via TKO in the first round. Arlovski faced Marcin Tybura on 17 June 2017 at UFC Fight Night 111. He lost the fight by unanimous decision (29–28, 28–27, and 29–27). After five consecutive defeats, Arlovski relocated his training to American Top Team. Arlovski faced Júnior Albini at UFC Fight Night: Poirier vs. Pettis on 11 November 2017 in Norfolk, Virginia. He won the fight via unanimous decision. Arlovski faced Stefan Struve on 4 March 2018 at UFC 222. He won the fight by unanimous decision. In the fight, Arlovski landed a career-best 4 takedowns, more than his entire career total up to that time (3) combined. Arlovski faced Tai Tuivasa at UFC 225 on 9 June 2018. He lost the fight via unanimous decision. Arlovski faced Shamil Abdurakhimov on 15 September 2018 at UFC Fight Night 136. He lost the fight by unanimous decision. Arlovski faced Walt Harris on 29 December 2018 at UFC 232. He lost the fight via split decision. The result was overturned to no contest after Harris tested positive for prohibited substance LGB4033, a selective androgen receptor modulator (SARM). Arlovski faced Augusto Sakai on 27 April 2019 at UFC Fight Night: Jacaré vs. Hermansson. He lost the fight by a controversial split decision. A rematch with Ben Rothwell took place on 20 July 2019 at UFC on ESPN 4. He won the fight via unanimous decision and set the all-time record for UFC heavyweight victories at 17. His next fight was with Jairzinho Rozenstruik on 2 November 2019 at UFC 244. He lost the fight via knockout in round one. Arlovski was scheduled to face Philipe Lins on 2 May 2020 at UFC Fight Night: Hermansson vs. Weidman. However, on April 9, Dana White, the president of UFC announced that this event was postponed due to the ongoing Coronavirus pandemic. and rescheduled to May 13, 2020, at UFC Fight Night: Smith vs. Teixeira. He won the fight via unanimous decision. Arlovski was expected to face Tanner Boser on 4 October 2020 at UFC on ESPN: Holm vs. Aldana. However a sickness with Arlovski delayed the bout four weeks