Marko has been involved in squash since 1992 – first as a player, then a coach, and since 2000 as a referee. He has been a WSF Referee since 2010, an ESF Referee Tutor & Assessor and a member of the ESF Referee Committee.
Marko has been involved in squash since 1992 – first as a player, then a coach, and since 2000 as a referee. He has been a WSF Referee since 2010, an ESF Referee Tutor & Assessor and a member of the ESF Referee Committee.