Michael ‘MIZE’ Zellmer – the German Head of XquiX graduated in Economics from the University of Hanover, Germany, in 2005. The German two time Olympic Athlete in Water Polo (2004 & 2008) started his business career as product and project manager for a regional broadband carrier. In 2009 he took responsibility for the management of the German Water Polo National Team and increased standards in communication, representation and organization for the team and the sport in general.

With his Water Polo Academy – The Perfect Goalie, that Michael founded in 2017, he has helped hundreds of young goalies through clinics, private sessions and group sessions, and remote goalie coaching, to develop to their best and supports Clubs, High Schools and College Teams with professional goalie coaching.

In 2017, MIZE started a strategic partnership with 5x Olympian Tony Azevedo to support his events and academy with goalie specific expertise.

Since 2019, MIZE represents USA Water Polo in his function as Associate Director for Goalie Development and is amongst others responsible for identification, evaluation, and coaching of talented goalies all over the US.