At ESPN, Fagan will be responsible for the day-to-day management of all of its multi-platform advertising and sponsorship sales across the EMEA region, including the relationship with ESPN's UK sales house, Sky Media.
His appointment follows the recent departure of Abeed Janmohamed, ESPN's head of agency sales across EMEA.
Fagan will also be charged with driving international sales from Europe-based clients for all ESPN products worldwide. He will report to Lynne Kraselsky, the senior vice-president of international ad and sponsorship sales, who is based in New York.
At BBC Worldwide, Fagan led the ad sales team for BBC World News and BBC.com across Western and Northern Europe.