In late 2021, Cleveland’s baseball team was reborn as the Guardians. The saga of that name change has its roots in a forgotten legend named Louis Sockalexis, and the tragedy that enveloped his story more than a century ago.

In tennis, measurement - specifically, judging whether a ball is in or out - is particularly crucial. And in the ESPN Films 30 for 30 short "Subject to Review" comes a close look at not just the technology that's been developed to determine the right calls with better accuracy, but the meaning and significance of that pursuit. Tracing the history of photographic review back more than a hundred years, and chronicling controversial moments before and after the age of review in tennis, the film explores the mechanisms of the cameras and computerized simulations that now serve as the final word on close calls - but also the limits of the veracity of those calls.

This is the story of Betsy Sailor, a woman who confronted a predator, a powerful football program and justice system, and of Irv Pankey, the man who joined her fight. A true tale of courage and the power of being believed.