 He has returned to kickboxing to fight Prince Ali at "HEAT 24" in Nagoya, Japan on 7 October 2012, winning the fight via decision.He is competed in a Heavyweight Tournament at GFC Series 1 in Dubai on 29 May 2014, defeating Arnold Oborotov via an extension round majority decision in the semi-finals before losing to Badr Hari by first-round TKO in the final.After training with PRIDE veteran Akira Shoji, Peter made his MMA debut in World Victory Road on 5 March 2008 against the seasoned Japanese MMA fighter Kazuyuki Fujita, and was defeated by submission in the first round.