Dennis Siver, a seasoned mixed martial artist, competed with a record of 23-11-0 (1 NC) and held a weight class of 145 lbs. Standing at 5' 6', he demonstrated an orthodox stance in the octagon. Throughout his UFC career, Siver averaged 3.87 significant strikes per minute with a striking accuracy of 32%. He absorbed an average of 2.67 strikes per minute and boasted a strike defense of 65%. His takedown attempts were less frequent, averaging 0.87 per 15 minutes with a takedown accuracy of 32%. Notable victories in Siver's career include defeating George Sotiropoulos, who had an ELO rating of 1132. His most recent fights showcase a win against BJ Penn in 2017 and a controversial overturned victory against Manvel Gamburyan in 2013. However, he suffered losses to Conor McGregor via KO/TKO punch in 2015 and Tatsuya Kawajiri via unanimous decision the same year.