Ultimate Fighting Championship
Marshman made his UFC debut on 19 November 2016 at UFC Fight Night: Mousasi vs. Hall 2.[12] He faced Magnus Cedenblad and won his first UFC win via TKO one round two.[13]
On 19 February 2017 Marshman faced Thiago Santos at UFC Fight Night: Lewis vs. Browne.[14] Marshman came out aggressively on round one but he was dropped to the floor on round two after he was hit by Santos's spinning wheel kick and followed by a series of striking to his face and lost the fight via a TKO.[15]
Marshman faced Ryan Janes at UFC Fight Night: Nelson vs. Ponzinibbio on 16 July 2017.[16] He won the fight via unanimous decision.[17]
Marshman faced Antônio Carlos Júnior on 28 October 2017 at UFC Fight Night 119.[18] He lost the fight via submission.[19]
Marshman was expected to face Elizeu Zaleski dos Santos on 17 March 2018 at UFC Fight Night 127.[20] However, on 19 February 2018 it was announced that Zaleski was pulled from the event, citing knee injury.[21] He was replaced by Brad Scott.[22] Subsequently, Marshman was removed from the card two days before the event for medical issues surrounding his weight cut and his fight with Scott was scrapped.[23]
Marshman faced Karl Roberson on 3 November 2018 at UFC 230.[24] He lost the fight via unanimous decision.[25]
Marshman faced John Phillips on 16 March 2019 at UFC Fight Night 147[26] At the weigh-ins, Marshman weighed in at 188 lbs, 2 pounds over the middleweight non-title fight limit of 186 lbs. He was fined 20% of his fight purse and the bout proceeded at catchweight.[27] Marshman won the bout via split decision.[28] Marshman received a formal warning from the military due to participating in the fight week against orders.[29]
Marshman faced Edmen Shahbazyan on 6 July 2019 at UFC 239.[30] He lost the fight via a rear-naked choke submission in the first round.[31]
Marshman was scheduled to face Markus Perez on 16 November 2019 at UFC Fight Night 164.[32] However, Marshman was pulled from the event for undisclosed reason and he was replaced by Wellington Turman.[33]
Marshman was expected to face Kevin Holland 21 March 2020 at UFC Fight Night: Woodley vs. Edwards.[34] However, due to COVID-19 pandemic, the event was cancelled.[35]
Mashman faced Sean Strickland, replacing Wellington Turman, on 31 October 2020 at UFC Fight Night 181.[36] At the weight-ins, Marshman weighed in at 187.5 pounds, one and a half pounds over the middleweight non-title fight limit. The bout proceeded at catchweight and Marshman was fined a percentage of his purses, which went to Strickland.[37] Marshman lost the fight via unanimous decision.[38]
Since the loss, Marshman has retired from MMA.[39]
