Upon his release, Jones also began competing in
strongman contests and during this time, he was dubbed "Megaman". As the reigning Australia's Strongest Man, he entered the World Strength Championship at
Callander,
Scotland, on 29–30 July 1995. He took first place, topping a field that included 1993
World's Strongest Man Gary Taylor. The following weekend, he competed in the
World Muscle Power Classic held at Mintlaw,
Aberdeenshire, Scotland. That contest was won by
Magnús Ver Magnússon, with Nathan finishing fifth in a field of twelve competitors. Jones next took part in the 1995
World's Strongest Man contest. After quickly defeating
Phil Martin twice in the
arm wrestling event in the qualifying heat, Jones was then matched against
Magnus Samuelsson, who had been
Europe's arm wrestling champion for several years and who would become the World's Strongest Man in 1998. Samuelsson won the first round. In the second round Jones refused to go down and pulled with his opposite arm, twisting his body. This resulted in breaking the arm he was using to wrestle (a spiral fracture of the
humerus), and he subsequently was out of the competition. Jones returned to Strongman competition in 1996, winning the
World Strongman Challenge, and placed third in a World's Strongest Man qualifying heat behind
Magnús Ver Magnússon and
Jorma Ojanaho. During the heat, Jones opted to retire from the penultimate event, confidently assuming he would win the last event to get the necessary points to get through to the final, however he placed fourth in the last event and angrily left the playing area, refusing to speak to any competitors or media. ==Mixed martial arts career==