ESPN in August of last year tried to prove its utility to all fans by unveiling a “ Where to Watch ” search feature in its mobile app and website that would do something every sports aficionado has craved since Amazon nabbed rights to stream portions of the NFL’s “Thursday Night Football” in 2017: help die-hards increasingly frustrated in their efforts to find their favorite teams as sports began to stream across new broadband giants, league-owned outlets and regional venues.

Lydia Murphy-Stephans believes she did this first — and thinks Disney couldn’t have done it without her.

In a suit filed Thursday in U.S. District Court in the Southern District of New York, Murphy-Stephans, an entrepreneur who was once a programming executive for ABC Sports and president of a now-shuttered TV

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