World Chase Tag® was formed by Christian Devaux in 2012 after a game of Tag with his son in their back garden. A year later, he was joined by his brother, Damien, and together they set about turning the oldest game into the newest sport. From organising casual meet-ups in Hyde Park, within a few years they were hosting international competitions with some of the world's best Parkour athletes and Ninja Warrior competitors.

Alex has worked alongside Seb Foucan with the French Team “Blacklist” since 2019 for the European Championship (ECT2019) and World Championship (WCT 2002) in the UK.