TL;DR: The Australian Open is streaming games for free on YouTube. The catch is that the players, court, and ball are all 3D generated. They and constructed in near-real time using cameras and video tracking software.

The loophole allows the Australian Open to show a version of live events at the tournament on its own channels, despite having sold lucrative exclusive broadcast rights to partners across the globe.

Demonstration video: https://youtu.be/H-TCgvSeYj4