[2] Stoforidis beat Mathieu Kongolo by third round TKO at the SUPERKOMBAT World Grand Prix 2013 Final Elimination in Ploiești, Romania on November 9, 2013.
[3][4] He competed in the SUPERKOMBAT World Grand Prix 2013 Final in Galați, Romania on December 21, 2013, losing to Redouan Cairo via TKO because of a broken hand in the semi-finals.
[7] Stoforidis made his ONE Championship debut against Beybulat Isaev at ONE: Heavy Hitters on January 14, 2022.
[11] Stoforidis was booked to face Rade Opačić at ONE on Prime Video 2 on September 30, 2022, in the ONE heavyweight Grand Prix alternate bout.
During his boxing course, Stoforidis has trained, mentored by, and developed a friendship with former Greek strongman and weightlifter Kyriakos Kapakoulakis.