Originally from South Africa, Turner has played in various Rugby leagues across different continents over the last decade. Mat started his professional career by representing Currie Cup winning Western Province Under-19 team in Cape Town in 2007/08 season. In 2008, he was included in the UCT Ikey Tigers team that played in the inaugural edition of the Varsity Cup competition. Mat finished as the top try scorer in the competition and eventually graduated to South Africa’s Under-20 training squad.
In 2008, Turner moved to England to join Premiership side Bristol and made an instant impact by scoring his first try within three minutes of coming on to the field in that year’s Anglo-Welsh Cup. Turner qualified to play internationally for England and was selected for the England sevens team and made his debut in the 2008 IRB Sevens World Series. He immediately established himself as a regular in the England setup and eventually went on to play a total of 34 Sevens World Series tournaments between 2009 and 2013, scoring 92 tries. In 2012, Turner was also nominated for the IRB Sevens Player of the Year award, and was top try scorer of the series in the same year with 37. In 2012 and 2015, Turner played for the Central Kings in Sri Lanka at the Carlton International 7s tournament. In August 2015, he was appointed as the head coach of the Sri Lanka national rugby sevens team, leading them to 2nd overall in the Asia Nation 7s for the first time.