Jayson utilizes his Muay Thai experience for coaching striking / standup in the UFC.
26 February 2012 - Mark Hunt while in Japan enlisted Jayson's help for UFC 144 where Hunt won by 1st round KO against Cheick Kongo (France)
3 March 2013 - Mark Hunt enlisted Jayson for UFC on Fuel TV: Silva vs. Stann where Hunt won and earned a jaw breaking Knock Out of the Night against Stefan Struve (Nederlands)
25 May 2013 - Mark Hunt enlisted Jayson for UFC 160 in Las Vegas, although losing to the former UFC World Champion Junior Dos Santos he gained Fight of the Night Honors
7 December 2013 Mark Hunt enlisted Jayson for UFC Fight Night: Hunt vs. Bigfoot in Brisbane, Australia, this fight was rated the best Heavyweight Fight in UFC History from UFC president Dana White, and once again Mark Hunt gained fight of the Night Honors.
20 September 2014 Mark Hunt enlisted Jayson for UFC Fight Night: Hunt vs. Nelson Tokyo, Japan. Hunt was awarded Performance of the Night Bonus award with his KO of Roy Nelson (fighter)
