Demsey started training in Mixed Martial Arts when he was 18 years old, and 8 months into his journey he had his first amateur MMA fight.
About a year later Demsey started Muay Thai, before going on to compete in that as well.
In 2014 he made his professional boxing debut after finishing with a 3-1 record in MMA and 4-0 record in Muay Thai.
In 6 years of boxing he has won the Franc Bianco 8 man tournament, Queensland Heavyweight title, Australian Interim title, 2 x Australian title, WBO Pan African title, WBO Asia Pacific title, IBF Intercontinental title while holding a record of 22 (14kos) – 0 losses.
Pro Boxing Record
Demsey McKean – 21-0 (13KOs)
|15 Oct 2022||Patrick Korte||South Bank Piazza, Brisbane||W (KO)||Won vacant International Boxing Federation Inter-Continental Heavy Title|
|27 Feb 2022||Ariel Esteban Bracamonte||O2 Arena, Greenwich||W (PTS)|
|19 Nov 2021||Don Haynesworth||SNHU, Manchester||W (TKO)|
|15 May 2021||Kiki Toa Leutele||Mansfield Tavern, Mansfield||W (UD)|
|3 Mar 2020||Jonathan Rice||The Star, Gold Coast||W (TKO)||Won vacant International Boxing Federation Inter-Continental Heavy Title
Won vacant World Boxing Organisation Asia Pacific Heavy Title
|8 Nov 2019||Scott Belshaw||Eatons Hill Hotel, Eatons Hill||W (KO)|
|21 Sep 2019||Patrick Eneanya||Southport Sharks AFL Club, Southport||W (TKO)||Won vacant World Boxing Organisation Africa Heavy Title|
|8 Jun 2019||Dominick Musil||The Star, Gold Coast||W (KO)|
|16 Mar 2019||Marcelo Nascimento||Southport Sharks AFL Club, Southport||W (TKO)|
|8 Dec 2018||Roger Izonritei||Southport Sharks AFL Club, Southport||W (TKO)||Australian Heavy Title|
|13 Oct 2018||Victor Oganov||Brisbane Convention and Exhibition Centre||W (TKO)|
|6 Oct 2017||Will Nasio||The Melbourne Pavilion, Flemington||W (TKO)||Australian Heavy Title|
|24 Mar 2017||Hunter Sam||Ipswich Civic Centre, Ipswich||W (TKO)||Interim Australian Heavy Title|
|3 Dec 2016||Hunter Sam||Mansfield Tavern, Mansfield||W (UD)|
|15 Apr 2016||James Cook||The Melbourne Pavilion, Flemington||W (TKO)|
|15 Apr 2016||Elijah Tevaga Sa'lesui||The Melbourne Pavilion, Flemington||W (UD)|
|15 Apr 2016||Tai Tuivasa||The Melbourne Pavilion, Flemington||W (UD)|
|4 Mar 2016||Anthony Fowler||Mansfield Tavern, Mansfield||W (KO)||Vacant Australia - Queensland State Heavy Title|
|4 Dec 2015||Anthony Fowler||Eatons Hill Hotel, Eatons Hill||W (TKO)|
|29 Aug 2015||Filipo Fonoti Masoe||Mansfield Tavern, Mansfield||W (UD)|
|7 Aug 2015||Leon Valusaga||Mansfield Tavern, Mansfield||W (UD)|
|31 Oct 2014||Luke Barclay||Logan Metro Sports Centre, Creastmead||W (UD)|